As always, a lot of it is up to your preferences. When I was researching for tvs, I compared a bunch of the sonys and samsungs. My personal opinion was that the sonys had a lot brighter picture in the store. However I felt that the samsungs had more realistic color. Since realistic color is important to me in a picture, I went with the samsung. However many people think that the brighter color creates a more vivid, and therefore, lifelike color.
I'd make a suggestion. When you go to Best Buy or your electronics shop, a lot of times you're looking at a video signal which may be severely degraded by the signal being split too many times. If you can't find these in a higher-end shop, go to your local B&M store and ask them to hook a DVD player up to each tv so that you can compare them. This should give you a bit better idea of how the picture will look.
Either way, you should be happy with your new tv.