Well, I'm absolutely lovin' this TV. Since I'm such a gamer, the Xbox and Gamecube are so far proving VERY nice on my Sanyo HT30744 (30" widescreen). Playing Halo, Ninja Gaiden and Metroid Prime in widescreen just make the experience THAT much more cinematic. My previous set was a Sony KV36HS20 (36" 4:3) and I'm so amazed at how much this Sanyo is compared to what I paid for that Sony 2 years ago ($1600 AFTER my Sony employee discount vs. $804 out the door at Walmart for the Sanyo!).
Some things I'm noticing are the geometry settings are a bit off. My screen tilts downward to the left, and I don't know if there's a way to correct this. There is no option in the TV Menu to adjust geometry, so maybe it's buried in the service menu somewhere.
Of interesting note is the INFO button when you're viewing Digital Cable or Component Source. It'll display the source resolution, which is a nice touch. With my Gamecube on Component3, Metroid Prime indicates 720*480 (60P), with the 60P indicating progressive scan (probably 60Hertz in progressive).
On my Xbox, since I have no upgraded the Dashboard to display in progressive, the INFO button indicates 720*480 (60I), with the 60I indicating interlaced mode. Pop in Halo, however, and the indicator flips to 60P to indicate 480P progressive scan.
Now I switch over to OTA HDTV and Digital channel 39 (KNSD in San Diego) indicates 1920*1080 (60I), indicating 1080i mode. Jumping over to Digital channel 15 (HiDef PBS), I now get 1280*720(60P) ... I'm assuming this is a 720P image now being up converted to 1080i, although the indication is somewhat misleading (if what others are saying is true, it is NOT showing anything in 720P). Wow -- PBS may not be my favorite channel (well, that depends on what's showing), but oh my goodness are the images impressive! I love hitting the FREEZE button and staring at a near-photographic quality image. Incredible!
Some other cool things are the PAP (Picture and Picture) mode. It's pretty neat to have one side showing an HDTV or any other broadcast source, while playing Xbox on the other side. Okay, so it's not entirely practical, but it's cool nonetheless! The left-side image pipes the sound, while the right-side image is in silent mode. You can easily swap the images with the press of the SWAP button.
The next test is to get my DVI to HDMI cable and finally get my HTPC hooked up to this bad boy. I am very happy so far with the performance of this TV, and even with its somewhat limited picture adjustment menu, it's still a GREAT deal at $747 plus tax.
PS. If anyone has a recommendation for a good, affordably priced antennae, please let me know. This Jensen antennae -- although decent -- is not able to grab a couple HD channels (signal is too weak apparently).