Whoever said Windows 7 will run slow under bootcamp is very much mistaken. It will run slow under VMWare, but bootcamp runs windows as the only OS, so it's super duper fast. My windows 7 starts up just as fast on my bootcamp air as my brother's Yoga 2 with better specs.

Unless you have a need to run OSX and Windows at the same time, you should really try bootcamp. I have no need to run them both at the same time so it works well for me. Especially with only a 13" screen.