Bought a Hewlett Packard 6.2 megapixel for my son's wedding earlier in the year and am pretty happy with both the camera and the software that came with it (also the dock that the camera sits in means there're always two sets of batteries charged up. See now, though, that HP have brought out a big screen version for around the same price. If your eyesight is anything like mine the big screen factor might be worth thinking about.
Sorry to go off at a tangent at this point but the following doesn't really justify a thread of its own. Was in Halfords yesterday and noticed they had the new TomTom One GPS on sale for £199. I asked the young lady for a demo and was pretty impressed (with the GPS that is not the young lady [though she was very nice too] :-) Nice 3D map and several choices of voice; it would certainly do for my driving requirements but wonder if anyone knows how good it would be for locating hard-to-find megaliths. It's portable and no bigger than the palm of your hand.
More info on this new gizmo here -
http://www.tomtom.com/products/features.php?ID=233&Language=1