Before you buy, I hope you've established where you are going to fly, and how you're going to learn. That's going to make a big difference in what you should buy (if anything). If you're going to join a club (figure another $100 for AMA and club dues, maybe more), you may find someone in the club with a used trainer and other equipment.

On the issue of the Aircore, understand that it's a kit. It's much easier than a balsa kit, but nowhere near as easy as some of the ARFs these days. On the other hand, the chances are high that the Aircore will last longer than 2 or 3 LT40s. Also, as you've noticed here, a lot of guys don't like the Aircore. What if you have to depend on one of those guys to teach you? It's not a good feeling when your instructor thinks you're a fool for buying the plane you bought.

So, check out the club before you buy anything.