I'm mostly doing java, eclipse rcp, python and web stack work so Linux would be fine.

But occasionally I need to work with color-calibrated monitors for photo processing and I have yet to try out if Linux and ICC get along fine and if there's a chance to hook my Spyder calibrator without booting to Win or Mac. Also need to check if CR2 raw files in Gimp is something that I can build my workflow on.

Additionally, with linux I'll miss some music creation with a DAW and a bunch of VST plugins. That forces me to keep multibooting to Windows when choosing Linux.

With OS X it would be a single env.