The Tiger 2 is an excellent plane. As a matter of fact, I just converted one to a twin with 2 OS .46AX's.

Any of the planes mentioned will do you just fine. Normally, we recommend removing 1 rib on each side of the 4-Stars. They tend to be very trainer-like when kept stock and roll faster and more axial with the shorter wing, but don't lose any of their landing characteristics.

The Big Stick (any size) is also trainer like, especially with its dihedral. It will roll with rudder, making knife edge harder. It also tends to try to roll out of outside maneuvers. A better choice is the Ultra Stick 40 or 60 for about the same corresponding price. It still rolls in knife edge, but not as much. I keep a Big Stick for breaking in engines, but I put anhedral in the wings.

The Tiger 2 is a tri-gear whereas the 4-Star is a tail dragger. Both take off and land excellent. The Goldberg hardware is good. My Tiger Twin weighs 9 pounds with a 31 oz/sq ft wing loading!! It still lands nicely-fast, but no snapping tendencies. I have slowed it down to nothing at altitude and it still doesn't snap.

Bottom line is you can't go wrong with any of them.

Final note: The AX is an excellent engine. Forthe larger size, I'd get a .75 (GMS or Tower) or a .91 (Magnum, OS, ST) before I bought a .61.