This is the one I have:
http://cgi.ebay.co.uk/2-5-x-2-5m-Bla...item4cee24ecd8
Fully waterproof roof. Collapsable frame (no putting poles together) with decent strength, I can just about put it up and down myself allthough it is much easier with two. At that price it is great value. Build quality is good.
Also available in 3mx3m but 2.5mx2.5m was perfect for me.
James