Raspbian Jessie is about as close as you'll get to a Win7 experience on a Pi, IMO. It's had enough features added to the desktop GUI to make the fact that it's Linux almost irrelevant to non-techie users. You just need to get used to finding ARM-compiled Debian replacements for your favourite Windows programs, and that's not too hard to do most of the time as there are thousands in the repository that can be easily accessed via Add/Remove Software
The Pi2B in my sig has now almost completely replaced a far more powerful x86 Win10 PC for general day-to-day usage. It's not hard to do. You just need to ask questions here and learn from the answers given.
Pi2B Mini-PC/Media Centre: ARM=1GHz (+3), Core=500MHz, v3d=500MHz, h264=333MHz, RAM=DDR2-1200 (+6/+4/+4+schmoo). Sandisk Ultra HC-I 32GB microSD card on '50=100' OCed slot (42MB/s read) running Raspbian/KODI16, Seagate 3.5" 1.5TB HDD mass storage.