I've never seen anybody even mention Staminus before here on WHT. You may want to try searching Google as many providers will put information on their site as to what provider they are using but not many put it in their signature or threads here.
I haven't heard of any company thats really bad with regarding stable resellers. The thing I would suggest for you to do is simply search WebHostingTalk and compare prices. Make sure you look at all of their policy's such as uptime and terms of service.