I'm in a similar boat. I use Rackspace for their servers and CDN, and Linode is definitely starting to look nice. It could actually be cheaper to go with Linode and a separate CDN provider, such as MaxCDN. MaxCDN has some of the features that are missing from Cloud Files, which is real nice too. The main thing holding me back is the time it takes to migrate. I know they target the higher end, but hopefully RackSpace will readjust their prices as well at some point.