.com is better. People tends to auto-assume .com when remembering "CoolName". If CoolName.me is "cooler" that CoolName.com - then register both and redirect .co

.com is better. People tends to auto-assume .com when remembering "CoolName". If CoolName.me is "cooler" that CoolName.com - then register both and redirect .com -> .me Otherwise if someone else owns CoolName.com and you grabbed CoolName.me - you're always at disadvantage. There are plenty of great .com domains to be found with a bit of creativity.