thanks for the reply jeff!
Not a lot of scale. I'm trying to keep my focus on coding and strategy instead of messing about on a server. Currently using an inherited server off Rackspace and the price comparison everywhere else (AWS, Heroku, Engine Yard) all come out cheaper.
I think performance is at least the same or better than Rackspace on all three fronts. I'm testing out a staging copy of my app on AWS (m1.small) + RDS (5gb) right now. Price per hour is better even at the pay-by-the hour rate. Not seeing any improvement on the speed (non-scientific benchmark).
Any experience with performance?