RE: Which one best for 3D practice
I know its not the answer you are looking for but my advice is to practice on the H9 330.
Its a large plane. It will do everything your trying to do easier and better than any small plane you could list in a poll.
I understand there is a lot of money and time invested in a plane like the 330 but you will be doing yourself a favor by using it.
Practice up high and dont push yourself too fast.
Bigger just flies better.