The LT-40 is a tough bird that stands up to a lot of punishment. The color scheme on the box is a bit pedestrian, but you can fancy it up all you want. It is an easy build, with most of the parts nicely laser cut for you. I helped a guy with one two summers ago. He soloed after about 6 lessons, flew it all summer, converted it to a tail dragger, flew it all winter, flew it all this summer and finally wore it out about a month ago when he flew it into a fence.

I know the standard combo comes with a 40, and it flies just fine with that, even up here at 8000 feet, but I like it with a 46 even better.

No comment on the others, I have a personal, and unreasonable prejudice against arfs.