Just bought one of these, they are a bit heavy but its the best money I have spent in terms of quality, its solid! & it's for life!
The Protex 1 is the one to go for in terms of durability, it is a 2 man setup but there's always someone around to help, when done correctly they are very easy to put up.
Watch the video on the website, it is as easy as they make it look.
http://www.surfturf.co.uk/shelters.htm