Myself, well infact im a reseller for
http://www.resellerchoice.com/
Great thing about them is the excellent and speedy service. Never had a problem that wasnt fixed really quickly. So polite and friendly. What makes it better is that as i resell, tickets raised by my clients are answered by me, and if i have a problem then resellerchoice fixes the problem.
Windows Servers fast and reliable. asp and php/mysql/sql - everything i need :-)
I have certainly found that there are cheaper hosts, but dont give the same standard of service.