I can't speak for the others, but I found the 1/2A6-2 flight to be the best. It flew considerably higher than with the 1/4A motors, yet was still in sight the entire time and still landed close (maybe 60 feet) to the pad. The 1/4A flights were pretty low, but they did land close. One was about 15 feet from the pad and the other about 25 feet (and almost on top of my grill...barbecued rocket anyone? )
Craig