TV Selection Help!!!!!?

OK, I think I've been to all sites (cnet etc.) but I still need some help. I want to get an HDTV between 50 - 62 inches and I'm stuck on the Pioneer Pro 111FD (50 inch) the Panasonic TH-58PZ800U and the Samsung Samsung HL61A750 and maybe a couple of other. I am willing to pay up to $3,000 for a TV, but of course I don't mind saving some money as well. I don't care for a TV to hang on a wall, just solid quality for price and great viewing. This will be my first HDTV which I will be using a lot for gaming, standard def DVD's, regular cable and blu-ray. I have already purchased an Aperion Intimus 532 7.1 system (10 inch sub) and the Pioneer VSX-92TXH receiver. I intend to get a Harmony One Remote, Oppo 981 upconverting DVD player and a Monster Home Theatre Reference HTS 3600 MKII PowerCenter with Clean Power Stage 3 v.2.1 Circuitry. I'm stating all this stuff so you will know what type of quality I'm interested in. The TV will be in a living room so there will be some light (though I'll try to control the level by having blinds installed/ using a dimmer) and viewing distance will be about 10 - 12 feet from the screen. Please let me know if I should go with the Pioneer I mentioned above or one of the larger screens mentioned above and whether or not I will terribly miss the loss in picture quality from not going with the Pioneer. I do not live in the U.S. and will need to ship the TV my sea to where I live (Trinidad, in the Caribbean).