[eluser]Leon Stafford[/eluser]
I should add to my last post that I have also been using MediaTemple for quite some time now for my own and clients' sites and am completely satisfied with their performance and support. I cannot say about the GRID or VE services, I am using several of their Dedicated Virtual (dv) servers at different configurations. Some maxxed out with RAM+CPU, some at the default and am happy with it all.
Sounds a bit like I work for them, but it is just so refreshing to get a hosting company which can deliver on performance AND offer amazing support.
Have only had one support staff on the phone out of about 30 who was a bit unfriendly, but 29 or so others were all super knowledgable and clear communicators.
If you like CodeIgniter's well formatted user guides, MT will suit you