Tough call! I just got a '34 and really like it. My other DVR is a '24, which I also like. I'd lean towards the five tuner model and bigger HDD.
This really should have been posted in a new thread, but since you asked. In my opinion, its a no-brainer, get the HR34. As mentioned, 5 tuners, twice the storage, plus 2x's the series recordings and PIP. Nothing like being able to record 4 different programs simultaneously and still have an open tuner to watch live TV.
Aside from size and a couple minor glitches, the only downside is that it won't hold the program buffer after you turn it off. So you have to leave it on to buffer the current channel, after you shut your TV off. Although leaving it on, only means the front panel stays lit, unless you dim the panel.
And the RF function works great!
Thanks Guys. Appreciate the feedback. Glad to hear the RF works great. I'm going to have this in a rack behind the seating area and needed to ensure the RF worked.