In reply to evanofthefell: I wouldn't get too hooked up on B2 or B3 - if the B3 boots have a decent rocker sole, they'll be fine for walking and there's boots out there that should really be classed as B2.5 as well.
Try every pair of boots on that you can, with an open mind, and get what fits regardless of cost or whether they're B2/3. I came out of a shop with B3 Asolos for about 180 notes and spent 2 weeks solid in them (no other footwear) without a blister or a complaint. I 'really' wanted La Sportivas but listened to my feet, with no regrets so far.
I've done easy ridges and gullies up to Grade II in bendy B0 boots with G10s, just getting out there is the most important thing.