I have this one
http://www.simplyhike.co.uk/ProductD...x?StockID=8982
Okay so it's alot of money but for the UK weather it really is needed. It has coped with evrthing from virtually sub zero temps up to 25deg at night and never struggled. it has loads of vetilation so it never get clammy inside and best of all to put it up you put the outer skin on first so if it is raining when you put it up the inner skin stays dry in the bag while you make yourself a cover. It also has a huge porch so if you are sharing you have plety of room to leave all your gear aswell as sleep as i've found as a biker with leathersn plus clothes etc you will need twice the persons space per person so a couple will need a 3-4 man tent and 1 person will need a 2 man tent IYSWIM?