I have been flying a world models ultimate 30 with an AXI 4120/14 and tp 4s2p battery for awhile now. The axi spins a 14x10 prop at about 600 watts and provides unlimited vertical. The AUW is 4.5 lbs. It was a good chunk of money to power this plane( it would be cheaper today as the batteries and motor prices have dropped) This plane would also fly nicely on an AXI 2826/12 at about 525 watts with a 13x8 prop. Its not the easiest plane to land, but it is easy to fly.
Kevin