Trying Magnepans, need advice

He guys, here's my current rig:
http://forum.audiogon.com/cgi-bin/fr.pl?vbudg&1264023083

Given the amp and room size, which Maggies should I get: 1) the MMG's or 2) the MM1B's (assuming cost is not an issue)?

I know speaker placement is vital to getting the best response from Maggies and I'm worried my room is too small to do them justice. I'd appreciate any comments. Thanks!