I don't have a FS rig right now either, but like you, I am thinking about getting one sometime soonish. From reading these boards it seems that all major brands have respectable suspension designs/systems, and that, like you said, it all comes down to personal preference. Ride as many bikes as you can (within your budget, if you have one), and get the one you like best. Just watch out for all that marketing hype!
Good luck!
Good luck!