I wouldnt touch the CMPro Kat 50 with a 10foot pole, too damn heavy. If you really wana learn 3D on a 46 2/s you really should get a profile, they are light and cheap. Then if you wanna 3D scale you will have to start looking at the bigger stuff. If you get good on a profile, I mean really good a Funtana 40 might be worth a try, I know its not scale but it looks close. Other than that I think you will have to go bigger.