I have recently purchased the Nikon P500 to replace my ageing Olympus SP590, so i have based this review on comparing the 2 cameras..
First impressions are important and i was very impressed with the Nikon when i removed it from the box, all in all a nice looking camera and well built. I always found the Olympus poorly built and slightly ugly looking though the Olympus served me well for nearly 2 years so only time will tell if the Nikon does as well.
I manily use my camera for photgraphing wildlife hence me opting for high zoom products, the 36x zoom of the Nikon is in a word brilliant with obvious advantages over the Olympus's useful 26x zoom.
Overall perfomance the Nikon seems leaps ahead of the Olympus, taking photos in anything other then perfect conditions was always a struggle for the Olympus though the Nikons low light ability seems quite good, the video mode of the Olympus was basic compared to the HD, zoomable, take a photo while filming possiblitys of the Nikon so no comparison on that.
As for other things the Nikon is slightly lighter and though the same size as the Olympus seems less bulky when in hand also the movable 3in LCD of the Nikon is very good. One thing i am struggling with though is the battery!, i found the Olympus and i worked well together with 2 sets of reghargable high power AAs and a charger while the Nikons battery and charging syestem seems a bit over the top in comparison also the Nikons battery dies without warning, i have just purchased a separate charger and battery so hopefully this will amend this problem.
To sum things up i am very impressed with the P500 and when i get the hang of the battery problem i will enjoy using it with all its features and gimiks..
So if you are looking for a good up to date high zoom camera though dont want to spend stupid money on a DSLR and all its lenses the Nikon Coolpix P500 is just up your street, its a lot of camera for such a good price..