I think the windows 7 is batter for the Dolphin. Because there are so many more features are of windows 7 than the Mac OSX. They are as bellow :
1) Good graphics
2) Quick Search
3) Jump List
4) Snap
5) Supports full 64 bit.
1) Good graphics
2) Quick Search
3) Jump List
4) Snap
5) Supports full 64 bit.