If you want power, run *nix. Use the command line. Enjoy.
Apple's Mac OSX is Unix.
Yep. I use it all the time. Just like I use Linux. Heck, I even use Solaris now and then.
If you want power use the command line. In whatever OS you happen to enjoy. Heck, powershell can be nice and hairy if you want and that's even available in Windows RT. -- My place : »www.schettino.us