*Update, a few years later here in 2020 and Siteground is STILL the best for wordpress hosting. Plus, they are about to migrate to Google Could Hosting!
To jump straight to the punch here, SiteGround!
Ive been designing websites for over a decade and have always had a battle with finding a good hosting company. Long ago it was Bluehost. That was of course prior to their company being purchased by a large conglomerate who immediately spread all their resources among it’s entire networking, taking my site speeds to incredibly long load times. From there I went to a plethora of other hosting companies and eventually I even ended up at GoDaddy. With my site speeds still struggling I had the opportunity to work on a new clients site which was hosted on SiteGround.