Figure out what you will use it for....simplicity, just point and shoot?
If that is it, then you can have some outstanding choices in the $300 market, with a 4 or 5 optical zoom, and 10 pixels.
If you want to shoot wide-life, etc, you'll need a full-blown dSLR to accommodate your glass. Nixon (mount) offer more choices in single lens do more, instead of having to buy a bunch of glass.
Remember with any zoom, be it point and shoot (fixed lens) or a 50mm/500mm lens, it has it sweet spot, all other ranges degrade in quality. Remember too....a lot of enhancing and improving can be done post shooting ( photo shop, etc....)
I'd say the most important thing would to be to figure out what you'll mostly use it for. Have fun....I love it