Which is usually only once a year....I want something more up scale than a motel like atmosphere....we go to WDW to get that accomadations...we stay deluxe...nothing better in theming and ambiance and they are hotel structures...inside corridors with restaurants.....
We have been basing our resort choices over the years on location...where we like being and what park we will frequent the most....we're MK people, could spend our entire stay there....so our choices are all deluxe there....high priced on the monorail loop and one in the same area but alot cheaper but still deluxe with a pleasant boat ride to the MK....we like being on the lakes....Water pageant nightly.....
MK loop has the Poly, CR, and GF all on the monorail circuit and Wilderness Lodge off on the boat circuit....we prefer WL over the others.....but the choice is yours...
As for using a rental car....we've done 45 trips to WDW and never used a rental car..even when we've driven to WDW, the car sat in the lot....ample transportation provided in a timely manner...buses at the resort, generally every 20 minutes, boats, monorails....we never waste vacation money on a rental when disney provides transportation for free and let them deal with the roads and traffic......
Best bet, get the vacation DVD they offer for free and scan all the resorts...have the room rate sheet printed out form any web site.....see how close which resorts are adjunct to the parks you want to visit a few times and the amenities you like (motel vs hotel) and go from there.....
Generally food is decent across the property, resort food from food courts (value and moderates) to full restaurant (deluxes) so no matter where you pick, you'll be able to eat..it's all in what you want and like....
Since we're veterans, picking a resort is real easy, like I stated above, location, location, location.....