I am thinking about swapping my 6176S for the 61A750, which has a better pic? the 6176S has a great picture but it does have slight bowing, does hte 750 have this problem? does the 750 have all of the features of the 6176S? also what is the diff between the 750 and the 650? thanks

The 750 model does NOT have the bowing problem the 76S has. That is the reason the 76S price has plummeted. As a side not for you to help out the bowing problem make sure you have NOTHING rested on top of your TV.

As for the different between the 750 and the 650, simply go with the 750

The main difference is that the 750 utilized led's as its light souce instead of a "lamp" / bulb.

What's so great about led's you might ask? hahah try about 20,000 hours of "lamp life"

Conversely bulb lit dlp's like the 650 and earlier models have ~1000-2000 hours of lamp life.

As for features everything in the 650 and 750 models are the same I think the 650 models are a bit slimmer because the led light source is much smaller than an actual dlp bulb