I was all about getting a colecovision I thrifted yesterday working (needs a power supply at minimum). But when I look at the games, they look about the same level my a8 already gives me, so I'm just not sure it's worth it.
You should get it modded by Yurkie for AV outs; the picture is way better. He also does a pause mod (sweet) and a crucial power supply mod. You'll be all set that way. PM me if you want game recommendations.