9", 10" or 12" tonearms

All great posts. My simplistic approach: I love the sound of my TT with a Graham Phantom Mkii and contacted my dealer and Bob Graham. Bob and my dealer took care of me and put me in a 10" Phantom Mkii because of clearance issues with my TT - a VPI TNT with Super Platter and Ring Clamp.

Find the equipment that gives you a musical experience you love and the rest will take care of itself.

Russellrcncom,
You might want to also read the posts by Frank Schroeder from 4-29-09: http://forum.audiogon.com/cgi-bin/fr.pl?eanlg&1235522919&openfrom&51&4&&st100
and his following ones.
These, together with Thom's comments above, should put the matter to rest.
Geometry "advantages," real or perceived are really only one element in this game...
Joel

Indeed - a great thread which will nicely illustrate the inner truth in Syntax' most recent comment here.
Highly recommended to everyone looking for insight into "the game"..