I'm predominantly a Windows user and I hate Mac UI. For me at least, it's hideous. The way you imply that Mac UI is the best in the game somewhat annoys me considering that UI cannot be implied as a fact and it's a personal preference. I might be down voted for this but that's my honest opinion.
BTW, I had trouble adjusting with Unity in 11.04 but I lived through it. Now, I don't find it troubling at all and this is the longest streak I've been using Linux without moving back to Windows. For me, 11.04 might not have been a game changer but it was a great foundation. 11.10 is updating on the background and I can't wait to check how Unity has turned up.
BTW, I had trouble adjusting with Unity in 11.04 but I lived through it. Now, I don't find it troubling at all and this is the longest streak I've been using Linux without moving back to Windows. For me, 11.04 might not have been a game changer but it was a great foundation. 11.10 is updating on the background and I can't wait to check how Unity has turned up.