Ok, I’ve spent a decade moving between hosting companies. Basically the answer is “they all suck”. I’ve not found a hosting company that offers WordPress hosting without something about there support that fails. Lets go through them all:
**A2Hosting is currently our primary recommendation. We have had clients successfully host sites with them for 12 months with only a few minor issues quickly fixed by the support team.
http://kahunahost.com/packages/ $50 a month package would likely meet our needs. Only 10 domains, but most our domains are sub-domains. Why? http://yoast.com/synthesis-managed-wordpress-hosting/
https://www.zippykid.com/pricing/ – several people have recommended them to me. This is mix of Rackspace quality network and zippykid configured (and managed) cloud servers. Managed hosting is naturally more expensive, but starts at $70… not sure how they consider subdomains.
http://www.dreamhost.com/web-hosting/ – $9 a month… I know it seems like its too cheap to be any good but I’ve not had a person who used it give a bad review…seems like a great savings of money with options to upgrade to VPS/Dedicated if shared doesn’t provide enough resources for our websites.
Some reviews on hosts we haven’t actually tried yet:
Got a company we haven’t seen yet? Feel free to contact us. Better yet, if your a hosting company and think your the perfect fit for WordPress? Tell us why and give us a trial, we will get the real story out. Better yet, support your local WordPress conference!
A great resource for learning the “types of hosting” you can find, which should help you determine which kind of hosting to look for at http://en.wikipedia.org/wiki/Web_hosting_service.