Well, since Chris asked for it.. I'll add to this thread as I get more experience with my unit (primarily in the area of OTA reception sensitivity and whatever else I discover). Mine went online Sunday afternoon and I gave it about 6 hours to munch APG data, etc. before I tried to do much of anything with it. Even at that, it was painfully slow. It's been soo long since I activated my series 1 combo units that I don't remember how long it took them to get beyond the initial setup, etc. Cosmetics/Aesthetics: I dunno about the rest of you, but whoever designed the face of this unit needs to go back to a real design school. For $1k I'd expect something that is at least neutral to pleasing in appearance. I liken this to the older-style Volvos: boxy and not elegant. If you ever go poking inside: I've only seen the insides of series 1 combo and standalone devices, so I can't compare to series 2 units, but this has to have the most dangerously exposed power supply of any TiVo unit I've personally seen. If you do power one down to add a hard drive, I strongly suggest you let the unit sit for 10-20 minutes to discharge the power supply caps, etc. before going in. (I did a virgin backup on mine since I've have bad experiences with Western Digital hard drives before.) Basic functionality: It's a TiVo. There are some new menu options, but it's the same interface. I've had some occasional glitches with HDnet (and the "no audio" problem - switch to another channel and switch back and the audio returns), but until the unit settles a bit, I'll wait and see. I went through last night and set up channels I receive and favorites. Hopefully this unit won't have the "feature" my series 1 units do where the favorites list gets nuked and all the channels I receive become checked (see tivocommunity.com if you've ever had that happen). OTA: This is the area where it is going to take me awhile to come to some sort of a subjective comparison. You need to understand that the HD situation in Denver is a joke, and I've pulled out all the stops just to try and get NBC. (ABC and CBS, along with the PBS channel that does put up 1080i content, are unreceivable by those of us significantly outside of metro Denver. Mark Lamutt knows all too much about the eventual resolution to that subject.) My initial sense is that it isn't as good as my Hughes HTL-HD in multipath rejection, but since I had to unwire that receiver to get enough signal strength to compensate for the internal splitter in the unit, I can't do an A/B between the HTL-HD and the HDTiVo right now. NBC was breaking up even during the news last night, so I'm guessing SD backup recordings are going to be mandatory for me. (And some year D* might actually give me CBS-HD-W .. waivers granted March 15th, still don't have the channel..) The oft-hashed "native resolution" issue: Honestly, I thought I understood this issue and it was going to be a non-factor for me since my TV does all stretch modes on 480i delivered via DVI or component. I think this issue is mis-named. On my HTL-HD, if I tune to a 1080i (or 720p) channel, I get it in 1080i and I only have 2 stretch modes. If I tune to a 480i channel, the picture fills the screen in 16:9 standard mode, and I can run through the various 4:3 stretch modes to pick what I want. On the HDTiVo, however, what actually happens is that when you go to a 480i channel or recording, instead of filling the screen with the picture, you get bars on the sides. This was when I perked up and went "ah .. this is what they're talking about". I had to go back into the setup menus and tell it I had a 4:3 TV to get comparable functionality to the HTL-HD in 480i, and thus be able to use my TV stretch modes. I'm wondering if I have to do the same to archive off to VCR or DVD. DougS keeps hinting at a fix for this issue, so for now I'll leave it be. But suffice it to say that I'll likely keep most of my recording on the SDTiVo also in the family room. Noise: This is a BIG issue with me. Whoever did the mechanical design of the series 1 combo units should be shot, IMO. Pulling air from bottom left and exhausting it bottom right was just plain idiotic. The HDTiVo has a rear-facing fan, but still pulls air from the bottom, so I added the obligatory set of foculpods to raise it off the shelf some more. Right now my DSR6000 is making soo much noise (Maxtor drives going bad) that I couldn't tell how loud the HDTiVo is. And I was recording/watching Survivor so I didn't have a chance to pull the power on that. I'll try tonight, but putting my ear next to the HDTiVo didn't yield a lot of "new" noise, so I'm hopeful that this unit is quieter. My series 1 standalone (which this replaced) was virtually silent. Simultaneous outputs: This was mostly a disappointment area to me. I got the HTL-HD primarily because it did simultaneously output to the DVI/component and s-video/composite ports at the same time. I had it on my standalone TiVo as a "poor man's HD". Obviously a chipset limitation, so oh well. Cool feature I've never seen before: Dig down in the menus and there is one that will tell you what DMAs the unit thinks you are in. I was quite surprised at the # of them in my list - half of them being Nebraska and even one Utah one! You do have the ability to edit that list, but for now I left it alone. If you made it this far, I'm impressed. As I get more time with the unit I'll add to this, but as Chris said in another post: this is basically going to be a big "ho-hum" for me given the paucity of HD content (particularly the OTA situation where I live). Being able to time-shift the Champ Car races on HDnet is about the biggest thing this will mean for me this summer.