What stats do you ifnd most useful?

[KHALI]

POkertracker newbie question. What stats do you find most useful and why? As far as displaying stats what four do you choose? VP$IP must be there then what aggression factor, percentage to showdown, win at showdown? I see a lot of posts with these stats attached to indicate villians style but sometimes I am not sure as to the meaning of some numbers. Is there an old post on this?

Thanks

[ghostface]

VPIP, PFR, total hands, went to sd, asb, and aggression by street