Both are pretty good players. Ari Wallin came in to the team for this season so can't say that much about him. He has been playing pretty good though the start of the season and I think he has surprised many hockey fans, especially the fans of other teams. He is good with the puck, good passes , in my oppinion pretty good eye for the game overall. In the teams defencman hierarchy I'd place him now on place 2 or 3 now.
Oskari Korpikari on the other hand is one of our own boys. I was very impressed many times last season of this youngsters play and he has continued on that pretty much now. He'll be a good allaround defencman in the future, but he is still very young and he has lots of progress to do, but at least he has all the potential to make it to the top. In the teams defencman hierarchy I'd place him now on place 6 now and with seven defencemen on each game he'll probably will play all the games in the league.
Forgot to mention Topi Jaakola. I am a little bit disapointed about his performance. Althgouh he is still very young, he has been playing at the Elite league team sometime already and in my oppinion his progress has somehow stopped or at least slowed down. Somehow I expected more of him before this season. He still has the potential and talents to make it to the top but I think he needs some change for his career now. In my oppinion he is the 7th ot 8th defenceman in the team and I think he'll find himself in minor league team Hokki at some point of the season which isn't a bad thing at all for his progress. There he would get resposibility and lots of play time and the game is still pretty good at that level. This year sensation, Janne Pesonen, played the whole last season in that team after playing few games in Karpat and now he game back to the elite league team this season and he has been outstanding.
I forgot to mention one thing about ari Walin earlier: He is a damn good skater.