I'm a big Victorino boaster. I had him last year and kept him this year so I'm a believer, and think he's an under the radar sort of guy.
This year he's hitting with more power (451 slug. compared to 423 last year), and has cut his strike outs down (k per 9.4 abs vs 7.3) while walking a little more (walk per 11.7 abs vs 12.3 in 07).
The thing with Victorino is he's very streaky in all areas, except maybe SB. IMO, he needs to play a lot to get one of these streaks going. The problem is he gets minor injuries which disrupt his playing time, and therefore reduces these streak he goes on.
I think if he could put together 160 games, he would hit 280-290, with 300 as a ceiling. I feel his celing for power is 20 hrs. However, I think he's more of a 145 game kind of player, meaning I expect 280-15 hr-45 sb -65 rbi-100 runs line.
I think Uptons + Granderson may have higher ceilings, but Victorino could actually be more stable. Granderson may be stealing less becuase of that lineup.