It wasn't too long ago that I moved most of my sites over to Slicehost. It was a great service, and the price was far better than what I was paying before, and I got better service. But, new services come along, or at least we become aware of other services, and another move was in order.
Linode also had a $100,000 giveaway, where the first 1000 new registrations would get a $100 credit to their account. I was able to get in at number 950.
So far I have been very pleased with the service. It seems faster, and my uptime monitor seems to concur with that assessment. It also marks a transition from Gentoo to Ubuntu, a huge change for a guy who has little time to tinker with learning Linux.