GUTS,
If the television is decent, there shouldn't be many problems with the game system's display on the television. I haven't compared mid 90's and prior video game systems on loads of televisions, so take my comment as you will!
Though I do feel certain, the larger the screen is, the more you will benefit from an S-Video cable/mod.
Some folks, at first, don't realize they can stretch the picture on their HD Widescreen tv. It's a good option to look for in a television of this sort, as I've read about a few HD televisions where either the owner/reviewer could not locate resizing options, or they were not there.