Linode is a much better choice for VPS. Rackspace cloud currently runs entirely on old AMD 2374 hardware. Sure you get 4 burstable cores for all instance types,

Linode is a much better choice for VPS. Rackspace cloud currently runs entirely on old AMD 2374 hardware. Sure you get 4 burstable cores for all instance types, but these do not perform even close to as well as 4 core on Intel 55xx or 56xx hardware many other cloud providers utilize. Disk IO may be better with Rackspace on th low end (e.g. Compared to M1.small), but it doesn't scale, and you'll be getting the same IO on a 16GB instance, which doesn't even come close to an m2 or cc instance with EC2.