I looked at both Colemak and Dvorak (as well as it's variants) and Colemak made the most sense to me. I too enjoy it though I never actually tried Dvorak so I can't compare them from personal experience. Changing was quick. The only problems that I have experienced are switching from Colemak to QWERTY, setting and using passwords that have to be used with more than one layout, and the occasional problem with at one character not working correctly in the cygwin terminal.