Tony,
of the two you picked, I would definitely start with the UCD. However, I woud consider it a mild 3D plane also. Very good for learning to hover and torque roll, good at knife edge once you mix out the coupling, but that's about it. It does fly traditional aerobatics well for a knock around plane. I have the 60 size and find it a pleasure to fly. Still, I have a basement of true 3D planes I would grab before the UCD if I'm in the mood for 3D (funny, I always am). All in all, My opinion is the UCD is a great choice for getting back into the hobby and as a basic introductory to 3D.

Best of luck,
Dave