Most collectable retro console

[GrandAmChandler]

I personally vote the Tiger R-Zone.

[Xian042]

depends on what exactly you mean by collectable, do you mean a system that has lots of games to collect, or something really rare that poses a challange?

but going by what I consider collectable, I'd go with NES or 2600. Not because of nostalgia, but because depending on how serious you want to get with the collecting there is something for everyone. You could start off with a collection of great common games, then step it up to complete games, then go further into rare games, then even more serious with 1 offs and homebrews. You will probably never get everything, and everyone will have something different, and you will constantly learn of new games you didnt know existed. (noobs anyway)

I collect Genesis/Mega Drive for personal nostalgia.

[RagedGamer]

Sega CDX and Neo Geo are two that come to mind

[Cinder6]

Collecting to have a lot of fun games to have, cheaply: 2600, NES, or Genesis
Collecting to have something worth way too much money: Neo Geo

Whether you enjoy playing the 2600 can be dependent on what you grew up with. (Note that I said "can"!)

[tom]

without a doubt:

[klausien]

Fantastic Tom. Just beautiful.

In terms of collectability, for both value (high & low) and general desirability, I would say the NES is #1, hands down. The library has its share of golden age style games from the early years, and develops all the way up to and beyond its immediate successors in terms of complexity. It was the king of its era, like the 2600 or the Playstation 1 & 2, but the Nintendo mystique is probably why it remains so much more collectable. Nintendo's characters are almost as respected, though certainly just as recognizable, as the Disney and Warner Bros. stables at this point.