Ron
Explorer
Chaosium is very conservative regarding rules changes. Although the Call of Cthulhu book is in its 6th edition, it still uses the same edition of the rules, with little changes.
Iron Crown definetly missed the spot with RMSS. I hate this version ever more than I love RM1/2, which are not very different one from the other.
Traveller is probably the only game where edition wars are even hotter than D&D. I've changed opinions about it with time. However, I now argue that Classic Traveller is the best edition, although there are some interesting improvements in MegaTraveller.
Iron Crown definetly missed the spot with RMSS. I hate this version ever more than I love RM1/2, which are not very different one from the other.
Traveller is probably the only game where edition wars are even hotter than D&D. I've changed opinions about it with time. However, I now argue that Classic Traveller is the best edition, although there are some interesting improvements in MegaTraveller.
But all in all, it just has the right kind of feel for me. I don't know why, each time I take a look at SR3, I get the image of high-powered anime instead of low-life cyberpunk. Could be just me, though. And the sourcebooks simply were better for 1st/2nd, that's pretty clear. 

