I just installed the TV in my cabinet last night.  The TV I bought for 169 dollars is a 25 inch that fits perfectlyinto the cabinet.  It ONLY has Composite video feed.  
www.gamersanon.com/arcade.html  for pictures of it
Is it worth me taking it all apart, taking that TV out, going back to the store, and searching hard to find a comprable tv withS-Video?  I mean in your honest opinion am I going to see that much of a difference playing arcade games?  What about playing pacman, versus Final fight, versus n64 games versus Neogeo games?  Talking with my friend I assume the color blending will be worse in Composite and better with S-Video because of the way colors are seperated on S-Video.
If you can tell me that it is worth it for me to remove it I will.
The 2x4's holding the TV in place are with 3 inch heavy duty screws with wood glue.  It will be Very difficult to remove them, but I can.