I have seen all play, Chucko and Chipchura more than a few times, Korpikoski only once. Judging from what I've seen, I'd rank it like this:
#1 - Kyle Chipchura
#2 - Kris Chucko
#3 - Lauri Korpikoski
Let me note right away that there is virtually ZERO chance that Chipchura doesn't make the NHL, whereas Chucko and Korpikoski probobly too has work to do. Chucko needs to pick up on his skating and continue to evolve in college, and he's likely 3 more years away from the NHL. Korpikoski I don't know as much about, but to me he played awfully small out there, and I'd worry about him getting eaten up in the NHL or AHL, though by nature these Fins are awfully resilient.
Chipchura however I feel is going to end up being one of the best picks of the 2004 entry draft. Not only is this kid going to play, but his offensive skills have been underrated to the point where people have devauled his overall potential significently. For me, I think there is a small chance that Chipchura becomes a FIRST LINE centreman, rather than a third line man. I saw him play twice for Prince Albert where he displayed wonderful hands. Later on in the season I heard he slowed down significantly and had trouble rekindling his offense, but I'll chalk that up to just a poor second half, and I'm still on this kids side. I think he's going to score a lot more than people think next year. 40-50 goals maybe. Add in his intangibles and his overall maturity level, and you've got a hell of a package.