Just got this TV from Newegg. I thought it was a little risky to ship a TV, but the local stores were much more expensive. So far so good.
The firmware version I got is 332-B11 V0133_L. The minimum volume is very quiet (or completely silent at the lowest position) so maybe that is fixed now. Input switching seems fast enough for me -- running through the inputs takes a split second, then it takes about a half second for the new input to come up. Not sure if that's what people were seeing with the "slow input switching" or not.
VGA tearing is still there. I tried 2 computers, all sorts of games, ATI Tray Tools forcing Vsyncs, any kind of triple buffering nonsense I could enable, etc. One computer had a VGA output and the new one had dual DVI-I (that I used a DVI-I to VGA adapter with). The new computer was plenty powerful enough and exhibits no issues with a normal CRT monitor. I tried all sorts of resolutions. I was only able to set it to 1360x768 instead of the 1366x native (I'm sure there's a utility for this) so maybe there is an infinitesimally small chance that could have an effect. On games like Half-Life 2, the tearing occurred every few seconds. In emulated games, it seemed to happen frequently while the background moved. I actually didn't notice it in Doom3-based games, but maybe I missed it.
That is the only bummer for me. I wanted to hook up the cable box through HDMI, DVD through component, and PC through VGA. I guess I will have to get an A/V receiver now to funnel both the DVI-I from the computer and cable box into the one HDMI port. I was hoping to hold off on that, but I'll have to get one eventually. The games look super cool on that big screen, but I only intended to use the PC for emulated games, so maybe I'll just use S-Video for "authenticity"
[EDIT] Oops, I forgot that the PC I want to use has the VGA output, so I'd have to get some sort of VGA-component adapter cable, then make or buy a cheap manual RCA plug switch; that ought to hack together nicely.
Let me know if anyone has any more questions.
Oh yeah, and TV/DVD quality is good enough for my needs