I was a longtime Slicehost user and while Rackspace eventually phased them out, they were not competitive with the new crop of VPS providers anyway. I was paying $70/mo for my slice. I don't remember the specs, but when they went away, I switched to a Linode that was about half the cost. (Linode has now also been outmoded for my uses, and I just have Vultr and DigitalOcean servers (+ 1 dedicated server in a rack somewhere) now).