Django, I have the Intellivoice and Tron Solar Sailer (which as a game was ass). Perhaps one day I'll be able to fill that void in your life. Although as far as the Intellivoice goes, you're much better off playing Bomb Squad and B-17 Bomber (which was the best of the few Intellivoice games that came out).
Intellivision had better games in my opinion, pure and simple. Unfortunately, they didn't have enough 'licenses' until very late in the game so most of the name games didn't show up on the platform. But the best games they had drilled the best games the 2600 had into the ground. Tron Deadly Discs, Dungeons & Dragons Treasure of Tarmin, Sub Hunt, B-17 Bomber, Utopia and a myriad of smaller games from Infocom (Dracula, Beauty & The Beast, Ice Trek) were all better than anything the 2600 had going for it.
2600 had all the power in the world behind it, and had some good games, but in the end just wasn't powerful enough to do cool enough things. The games graphics and AI left much to be desired, even in those simple times. Sure, I loved a few games like H.E.R.O., Yar's Revenge, etc., but even the games I loved got old quickly.
Colecovision had one thing really going for it that I remember. That was the first system in my memory that used 'easter eggs'. I only remember one, and it was on the Smurf's game. Once you got to the end where you had to save Smurfette, if you turned around to run out of the room and leave her there she stripped naked to entice you to save her. Man what a great easter egg.
