Rackspace support has plummeted horribly from a few years ago. They still charge a huge premium, and act like prima donnas, but they are just not worth it.
I didn't mention softlayer because I did not want to look like a stooge but yeah, that is who I use these days. Decent prices, reasonable support, you would have to give me a reason not to go with them for a new deploy.
I also love softlayer; they have a variety of datacenters now (including san jose), great pricing (except for RAM, but you can negotiate that), and their service, while a lot smaller team than rackspace, is still very good.
Their cloud product isn't as good as Rackspace and nowhere near as good as EC2, but maybe that will improve. I still like rackspace too; I wouldn't switch from one to the other, but I would definitely evaluate both whenever making a decision about hosting for a new project.