It may be small and slow, but the Micro Citabria and Cessna can make a good park/backyard flyer. They are very forgiving and highly entertaining with a little breeze. I practive carrier approaches and touch and goes off of a 4 x 8 sheet of plywood sitting on saw horses in my driveway, and then fly it in the warehouse at work on my breaks. It will loop and fly inverted for a few seconds. Not to mention 15 min flights and 8 bucks for extra battery packs. When i lose control, just let go of the sticks and it recovers on its own.

It may be completly different from the other planes disscussed here but it is simple fun for little money. And great for first time pilots.