Wii version. Despite the fact I'm getting the system anyways so it's not like I'm buying it for $300 I can easily weigh my choices.
I see the Wii one with the control as just more responsive to my needs therefore superior. I've never much loved 3D 3rd person games where that second analog has always dragged along in trying to do the simplist of tasks. You find it aims too slow for a projectile weapon, you have to be finicky with angling it for crap like cameras, and there are those 'hot spots' to just be right to grab X item. I see the wii controller allowing me to aim a projectile more like I would in reality which is faster, and I see me being able to really 'see' around quicker than a stick does, and being able to aim at X item on a shelf and grab it without jockeying a second stick I find nice too.
All that aside I really have always in a game style like this wanted to literally control where my sword and shield actions would be, and this one does that. INstead of the scripted 3-5 swipes you get in a game I can slash high, low, stab the gut, nick the shins, or go for the throat/face how I want to...and as much so block those same areas. Just seems like a more interesting and open challenge to me as it's something new.