I have used this since it's been in beta because I know the guys behind the service. Besides being exceptionally dedicated and cool guys, the service is genuinely good. It definitely solved our problem of going to production with something like Heroku. It's a lot more cost/performance effective and also (as mentioned in one of the comments) you have full access to your box if you need it!
When you know what's in the pipeline, it's even more exciting. Keep up the good stuff guys.