While the contrast ratio and blacks varies a lot from model to model, be careful not to discount a TV that might just be badly adjusted at the store. They tend to crank the brightness to compete with the store lights. Go into the menu and lower the brightness to see if you can get decent blacks without crushing the whites.
I agree that you don't really want a 32" widescreen if you're used to 32" 4:3. However, the added clarity of the HD panel will make it seem bigger anyway. What I think you want is a 37 or 42". You'll see about the same 4:3 image that you always have (though there are fewer and fewer shows shot that way) and you'll get more wow with widescreen material.
I agree that you don't really want a 32" widescreen if you're used to 32" 4:3. However, the added clarity of the HD panel will make it seem bigger anyway. What I think you want is a 37 or 42". You'll see about the same 4:3 image that you always have (though there are fewer and fewer shows shot that way) and you'll get more wow with widescreen material.