My advice for you is that you buy the commercial edition. It's the best deal if you can afford it. And it would be best for you as you can check the best features of 3dgs. I hope that you will be able to grasp the nitty-gritty of working in 3d in no time as you already have experience of 2d. I too started in 2d and when I started to work in 3d, I was able to handle 3d maths in no time. So you will be seeking new features and be able to play with the advance features that 3dgs has to offer.