I think the percentage of Mac users using Windows 7 is higher than 5%. Bootcamp or VM (VMware Fusion, Parallels, VirtualBox). I have Windows 7 HP x86 installed in VM to keep the install footprint smaller from using a 240GB SSD.
System Manufacturer/Model Number Sony / IBM / Apple MB Pro 2011 OS Windows 7 Ultimate x64 / OS X Snow Leopard 10.6.8 CPU i7 QM720 - AMD MV40 - i5 2.3Ghz SB Memory 8GB - 4GB - 8GB Graphics Card Nvidia 310M - ATI 3200M - Intel HD3000 Sound Card Various Monitor(s) Displays Sony 17 inch LCD - 12 inch - 13 inch
Hard Drives OCZ Vertex 2 240Gb
Crucial RealSSD C330 256GB
OWC Mercury Extreme Pro 6G 240GB