I'm getting it too. I'm totally new to the series, tho. Well I have played some VF before, but that was eons ago and on poor man's versions (VF2 on SEGA Genesis... lol). I used to play with Sarah, I believe.
Anyway, I've bought VF5Online a few months ago to catch up a bit. Haven't played it much other than the Quest mode. I'm comfy using Vanessa for now. I love her raw fighting style!
Oddly enough, today I trying to get some online matches, but I found a glitch of some sort. I play one match just fine, then I try to play a second one and game freezes in some kind of green loading screen. It's not the game. I mean it's brand new and has no scratches or whatsoever, and it's not the console or connection either (never had any trouble online with any other 360 game, or with any other system for that matter). Hope that this thing doesn't happen with FS.
So anyway, I'll be playing it on 360.