I signed up to WPX Hosting and have been pretty happy with their service. It shaved over a second off the loading time for a site of mine without making any other changes (it now typically loads in less than half a second) and their customer service is almost as quick! Read my full WPX Hosting review.
I want to show you how to save some money if you plan on signing up. This promo code applies to all WPX plans: Business, Professional and Elite.