I'd take the Sig Kadet LT-40 or the Hobbico Avistar versus any of the other trainers on your list. I'd happily fly the Alpha 40, the Tiger Trainer 40/60, or the Goldberg Eagle II as well. There's nothing seriously wrong with the Nexstar or the PT-40, but they both generally have too much dihedral to fly well in windy conditions. For what was on your list, I voted for the Goldberg Eagle 2.