Newb,
To fly 3D you need to have a complete understanding what the plane is doing and which controls you should move to keep it in a maneuver. Too many people try to move up or advance too quickly. They will eventually find that they are flying a plane that their skill level can't handle, and they usually end up crashing the plane. I know this from experience because I did the same thing. Flying 3D (or any other type of flying) isn't about the airplane, it's about your skills. Yes, it's important to have an airplane that can fly 3D but it's more important to have the skill to fly 3D. I've seen experienced 3D pilots hover a trainer!!! You get the experience the same way you get everything else, practice, practice, practice. Before you move to a second plane you need to stay with your trainer until you have mastered flying it. A good rule of thumb I use for people that I have taught to fly is when you can fly a complete circuit of your field inverted with your trainer, then you are ready to move up. Until then, keep practicing.

You should get a second plane that will allow you to advance your flying skills but will still be forgiving if you get into trouble. The Sig 4* and the Goldberg Tiger II are both excellent planes for this, but not the only planes either that will fit this bill. While you are flying your second plane it might be a good time to start building your 3rd plane (if you want to build).

When I refer to experience on a plane (your 1st or 2nd plane) I'm not talking about a few flights, but rather months of flying. You should be able to measure your flights in gallons of fuel through the plane before you move up.

I know there are people out there that are going to argue with me, and that is definitely their choice to do so, but I will firmly stick to my beliefs here. The only way to get where you want to be is experience, and there is only one way to get there. If were easy than all of us would be standing on the podium at the professional flying events.

Hang in there, I have no doubt in my mind that you'll be flying 3D in no time if you work at it.

That's my 02¢ worth.