In reply to mypyrex: ive had a few laughs in currys as well, which is pretty much the same shop, when asked if i needed any help when choosing a camcorder i asked a few in depth questions, after a period of deep contemplation the sales assistant replied well my sister has the panasonic and she thinks its great.
also when browsing through the fidge freezers a young assistant tried to sell me on one and i said i didnt want one that reqd plumbing in, he assured me several times it wasnt the kind that needed connected to a water supply, when i showed him the manual from inside he said that it was the wrong manual, when i showed him the plumbing in kit form inside he said it was probaly from another fridge freezer and had been left there by mistake.
best to do your research online and then buy what you want as the standard of knowledge is pretty dire.