Gearheads of War

I got a 23 inch samsung hd lcd widescreen tv and the picture in 720p is meh.... When I play gears the edges of the armor, especially around the shoudlers does this weird flashy thing (Sorry, I don't know actual terminology for things like that) One of the marble blast levels walls which are clear do this continual blinking thing. When I watch movies where there is alot of dust or smoke or long grass swaying in the background it becomes pixelated and annoys the hell out of me. Plus, it doesn't support most of my dvds on my 360. I'm thinking of adding maybe another 500-600 bucks which puts me in the 1300 range. Any suggestions on tvs that aren't awful?