[RichBrew]

I agree with nightshade with regards to Jessops. Once upon a time, I could go into my local Jessops and talk to the Nikon/Canon/Olympus/Minolta/Pentax (delete non-applicable) man about specific requirements. These days the knowledge is not there. One member of staff even denied the existance of a particular item and was prepared to argue the fact, even though the manufacturer had written to me with all the relevant details of the product. On another occasion I had to ask the "salesperson" if I could perhaps speak to a grow-up!
Large stores are killing themselves with cheap labour and inexperienced staff. This, of course, varies with location, so try out your local store. If you're happy, OK, but you still may not be getting the best advice. Beware.