BeanstalkApp from Wildbit is my choice for the best designed, SasS version control system. GIthub has become too expensive. And Bitbucket is very attractive because of its free for small teams (5 or fewer) but the design isn’t as intuitive and the actual site is pretty slow. There is some performance issues with it, it seems. Beanstalk also has built in review and deployment. And you’re also supporting a mostly bootstrapped, small businesses in Philadelphia I admire.