the first 2 are probably the easiest of the 5 to fly. and they are better made. the 3rd one is going to be a bit harder to fly and control. and the 4th one is a piece of crap that not only has hardly any control but is made of a hard styrofoam. the tail blade is real flimsy and the wires are very thin and break easy.

they are all toys as the other guy said but for just messing around inside the house i'd go for the 1st or 2nd one. those two you would at least be able to go forward and handle easier being coax's.. jake