Managed hosting providers provide specialized services to maintain your software system, so that you can concentrate on content generation.
Not all hosting providers are born (or maintained) equal. Be careful in choosing a provider. It may be more difficult to switch one year down the line, when there is a possibility that you have forgotten some basics of WordPress!
Try the managed hosting recommendations below.
InMotion hosting is more diverse, and can host your WordPress, Drupal, Joomla or other sites. They also provide shared or dedicated hosting.