At the moment I've got a few pairs of Cherokee jeans that I got from Tesco over a year ago and they are the comfiest jeans I have ever worn. A couple of them are really starting to wear out now and a couple of holes have just started to surface - to which I will be buying a couple of new pairs this week.
All in all they are the best jeans I have ever worn, and I also wear them for work so they get used all the time and the colour doesn't seem to fade out too quick either!
At the time as well they were around the £15 mark but they have definately lasted for the money, and from looking on the Tesco website now they are down to nearly a tenner.
I would invest in some more expensive designer jeans but if I did that, I would only be able to buy 1 or 2 pairs at a time.
Liam