
Most of the Intellivision ports to Atari I've seen look pretty dreadful like Sea Battle. My friend had an Intellivision II console not too long ago. I never even knew that existed.
I always wanted a 7800 for those good arcade ports. I think its controller might have been a little better than the 5200's but not by much. I'd rather plug in an old 2600 controller to it, if that's possible.
I've never seen, or operated any of the Atari computers. It'd be fun to do that sometime.