This site runs on servers at WebHost4Life. I use a shared hosting plan, which means my site can be on a server shared by up to 250 other sites. For my site, this is a perfect solution, as I don't get enough traffic to really justify a higher-quality plan.
At the company I work for, due to client budgeting restrictions, we often put our clients on similar hosting plans. Clients will readily pay $15-$20k for a site, but then go all wobbly-kneed at the idea of paying more than $20/month for hosting. Not sure why that is-- especially when the site is such a core part of their business -- but it happens.
Recently, though, we've been pushing clients to use another host. It's still a shared-hosting plan, but they limit both the number and type of sites they host per server, and they monitor things in ways that I find astounding. Their support is OUTSTANDING-- it's not just quick, thorough, and responsive, it's actually informative.
The host I am talking about is PowerDNN. If you are looking for a top-quality web host that still has competitive prices, give Tony Valenti a call over at PowerDNN. I can't say enough about them. Once I get rid of some other bills, I might even move this site over there. I am absolutely happy with the service they provide. They are really pleasant to deal with.
Check them out: www.powerdnn.com.