All accounts now have unlimited private and public repositories with unlimited storage. You can now get a 5-user private code repository account for free… forever
I'm an entrenched Github user now, using the Micro plan, mainly because it has always just worked for me from behind a corporate firewall. I tried Bitbucket and Codaset out when I was trying to pick someone to use, and it's all very well having free plans that give you private repositories, but I couldn't get either to work reliably from work. Still though, Bitbucket are now offering the equivalent of Github's Small plan ($12/month) for free - interesting times.