So far the best, least expensive pattern trainer I have found is the Bridi Killer Kaos. I have flown every version of the Kaos from Regular/Super/Utter/Killer and for my money, the Killer Kaos is untouchable as far as flight charactoristics/ease of building/price. It can be powered w/a .60 and do just about anything you can think of and still land easily.

I know that Bridi is winding down his business but he does have some kits available at http://www.bridiradiocontrol.com/.

I just flew my latest Killer on Sunday and it is one of the best all around planes I have ever owned. Good luck.

Dan