Enroth:What exactly makes them the best?
Assuming you're taking about OrcsWeb...
Well, you're using them right now. They host the www.asp.net site, as well as quite a few others. They are extremely proactive with notifying users of potential issues, and explaining unexpected outages. Redundant data centers, redundant backbone connections, 24x7 support, never had a support email go more then ten minutes without an answer, they go far beyond their responsibilities in tracking issues, even to the point of debugging your site code, never oversold on bandwidth or capacity, incredible uptime...
I could go on forever on what makes them the best, but 95% of the posters in this forum will never use them due to the costs. They don't even pretend to compete with the GoDaddy/WebHost4Life/Discount ASP types of hosters. If you want the best and are happy to pay for it, they are the ones to use. Their monthly fee exceeds some of the cheap hosts' annual fee. But, if you need to haul cattle cross country, you don't buy a Ford Focus.
Jeff