I had a look at clustered.net's website. They seem to promise a bit with a competitive pricing scheme and a nice clean website.
Are there any experiences? Good or bad? Are they fully staffed 24x7 or just a lone T1 tech at night trying to cope with it all? Do they have qualified os and network engineers?
They do not seem to be a very big company. How do they compare to, say, Rackspace and Verio's managed hosting in the UK? What I like about the the bigger hosts is that they can handle most issues 24x7.