I have heard really good things about spry, but never used them. Used Rackforce some time ago, great except for the management level. You are pretty much on your own unless you purchase basic management. Liquid Web are apparently pretty good as well.
Some other companies to consider:
Powervps.com - good, but no options to purchase additional ram etc - you would need to move up to the next package.
Knownhost.com - I decided to try a west coast vps from them a couple weeks back, and so far everything has been great. Just a little too soon to recommend them, I would like a few months of service before making a solid recommendation.