I am a current Echostar customer (Dishplayer receivers) wanting to switch to DirecTV. I plan to get the HDTivo, but I keep reading that the grid format guide is slow. How slow is slow? Are we talking 2 seconds to bring it up or 10 seconds? Are we talking 1 second to scroll or 5 seconds? I know that many people do not use the grid guide, but I am still interested in how it performs. Thanks.