In reply to Scouse007: Some good points already made here. Seems to me that you're after first a 'base camp' tent which will mostly be pitched from the car and can stand up to the weather you could reasonably expect to find in the valley but that can, should the inclination take you, be dragged up a hill for a night or two without incurring too much of a weight penalty; and then a backpacking tent (one or two person?) that is lighter weight but which you might not expect to be as robust.
If that's so, then you could increase the weight of the 'base camp' tent a little. There are many options depending on your budget and your height, as taller people just won't be as comfortable in some tents. You'll be looking for things such as ease of pitching (outer first or 'as one' definitely scores in the UK), twin porches to make cooking out of the wind easier and allow greater options for storing kit, convenience of use and so on. There's always a tendency for people to defend their own choices; I've got one of these so you should get one too. Nothing wrong with that as such, and a happy customer is a good thing, but all such replies lack a certain objectivity. The recommendation may indeed be a fine, fine product but it might not suit you. Have a look around; the kit reviews in various magazines (the often-mocked Trail and its website is as good a place to start as anywhere) and the Outdoors Magic website would be good. Don't ignore brands that aren't the 'new black'; Vango tents don't get reviewed very often, but they're a good brand offering tents that are frequently cheaper and just as good as the other manufacturers.
It all adds to the research, but that's not a bad thing. Try too to see the tents you're interested in before committing to a purchase; a number of shops have displays and you can always ask if one can be put up for you. You may find that what is advertised as a feature is for you a complete pain in the arse, or that the pockets on the inside of the tent are too small/big/absent, that you must have/can't be doing with a gear loft, that a footprint seems like a good idea/is a waste of time and money, and similar.
Hope this helps, and good luck searching. The perfect tent will be out there...
T.