I'd second ServerIntellect too, they were good and I'd recommend them and would imagine they would fit most requirements except where requirements are for extremely high uptime, scalability and a large premium on the availability of support.

This may be a bit high spec for you, but for very serious projects I wouldn't hesistate to go past Rackspace Managed Hosting for a managed server. We had previously setup with a "Virtual Dedicated" server with ServerIntellect, and while reasonable, the database configuration and a delay in getting setup prompted us to go Rackspace on one crucial Sunday afternoon - they built the server and we were up and running that very Sunday. We're running Windows 2003 R2 / SQL 2005 / IIS 6.0 setup, it's great to have your own DB server, deployment of sites has become a whole lot less painful, and we were actually allowed to lease SQL 2005 rather than pay for a license - very useful. So far the level of support is absolutely astounding - so much so we've become a Rackspace Solution Partner ([PLUG]so anyone needing a quote or more information drop me a line![/PLUG]). Anyway, that's just our experience. Shared hosts we've used recently for ASP.NET 2.0 have been CrystalTech (pretty good, but been greatly turned off by control panels, etc) and ServerIntellect for their "Virtual Dedicated" but we've tended to stay away from the smaller more volitile shared hosts. It's a pity as the market for windows shared hosting doesn't seem to have a real head and shoulders leader at the moment. AASW (PS: If you haven't been able to find a shared host that fits your requirements and aren't looking for a managed or dedicated solution, feel free to get in touch and we may be able to set your site up on one of our own managed servers for you).