In reply to donnacha.

Good hosts are a you get what you pay for deal. I've had hosting at Host Gator, Blue Host, 1&1 to name a few of the names in known hosting. By the time we added up what everything cost for another I forget $15 or $20 we could go dedicated. We went with Codero, we have an i5 Server with two SSD drives as well as a HD, 20TB a month of bandwidth and the folks at Codero are not slouches. They KNOW hosting. I would bet dollars that one could take any WP host firm and Codero's engineers will be more knowledgeable than they. Why?

Two reasons. One, its not about the application its about maximizing the performance of the host platform and these folks are on par with Rackspace. Two, its about their infrastructure and it just FLIES. Its unbelievably fast. We slapped the sites built, Joomla's and some eCommerce (including two Magento sites) on it and well... just night and day.