Yea, That is a big divide in the Amiga world.... Not only are we fractured between red/blue/aros but there is also the big crowd here that is just into retro Amiga....
This is an interesting thread cause I did just go look at what was going on in Atari retro world these days! 
I have recently checked them out to see what is going on as well actually. Funny thing is - I couldn't really find a popular hub/forum for Atari-land that seemed to have some excitement or at least interesting conversation. Am I blind???