Could you elaborate? I used to think Heroku was a premium "managed" service with pricing to match, and I paid for it because I really didn't want to think about servers, routing, etc. etc. But I just recently provisioned a small "cloud server" (their name, not mine) from Rackspace and while I was in there I decided to price out a comparable setup to what we have with Heroku and I found that the pricing was pretty comparable, and I like Heroku's horizontal scalability (and how much of the stack they manage for us) much better.