It was basic frustrations like this that caused us to switch as well. In particular, it with the issue with tasks lists - we used Basecamp and Highrise, and eve

It was basic frustrations like this that caused us to switch as well. In particular, it with the issue with tasks lists - we used Basecamp and Highrise, and even though the feature request has been made regularly for the last 4 years, there is STILL no way to get a common task list across Highrise and Basecamp. So we went over to Zoho. In the time it has taken 37Signals to hem and haw over task lists, Zoho has created an entire ecosystem of apps, integrated it with Google App Engine, associated tasks across their apps, etc. Sure, the apps aren't pretty, but they work. Jason would probably argue that our needs aren't the norm, that we've outgrown Highrise, but a counterexample is FreshBooks: we've been using FreshBooks since day one in our business, and we continue to us it because it's a great app that is growing with us. It focuses on simplifying things that are ordinarily complex rather than simplicity as an end goal.