In reply to psr77:
Do a search on here for Phud or alpkit and you'll see this question is asked pretty frequently, usually with a good response.
I've had one for about 3 years now I think, and it's only now starting to get a bit soft, but I haven't had any trouble with the shell. In terms of value for money, you'd be hard pushed ot get anything better and the Alpkit service is excellent.