Just wondering, how many of you use a cMBP 15 as a desktop? Meaning you keep it in clam shell mode 90% of the time. How have you found the experience? Is Bluetooth, and heat dissipation good? What about fan noise? Are they always running? I'm considering getting a cMBP as a desktop replacement just to clear out some desk space. I looked at the Mac Mini but it doesn't have the performance I'm looking for due to the lack of discreet graphics, and I'm using my own high end display so the iMac is out too.