This is PERSONAL preference. I like fun, colored headphones, over audiophile-esque balanced headphones... I'm also going to add headphones I have recently owned but sold...
1.) XB700 - Incredible BASS. I loved getting lost in the sea of bass. Clear for a bass heavy headphone. Sold due to uncomfortable issues with the padding.
2.) DT770 Pro 80 - Lovely bass, fun, fun, fun. Super comfortable. Gaming and watching movies with these are AWESOME.
3.) M50 - Balanced monsters with slight emphasis on bass, but still fairly neutral. Great bargain, and my most preferred in overal comfort, fit, and clamp. Everyone should try these at least once in their lifetime. Sold because they were too much like the DT770 Pro 80, so I didn't need them.
4.) DT880 - Seriously balanced, great for gaming, and VERY clear. If I was an audiophile, these would be number 1, no question.
5.) KSC75 - CHEAP, fun, unbelievable for the price
6.) RE0 - Incredibly neutral, clear, precise. Gets the most use, since I use them everytime I'm out of the house. They'd be number 2 if I was an audiophile.
7.) AD700 - AWESOME soundstage, crisp, and MADE for gaming. Super comfy ear pads, but uncomfortable fit, and my ears touched the drivers. Would be probably number 5 if they fit MUCH better, and my ears didn't touch the drivers.
Yes, I prefer the KSC75 over the RE0. I LOOOOVE the AD700s, but the fit really hurt it for me.