I'd go for the Dragunfly of all of the ones you listed, simply because it's based on the autococker design, and accepts autococker compatible parts. Of course, it's not a "real" autococker, and I doubt if the electronics and stock parts are all that great (M3 not exactly famous for the quality of their parts). An Ebladed autococker would be much better, needless to say, but since the Dragunfly sells for about the same price as an Eblade kit without a marker to put it on, it'd probably wouldn't be a bad start.
