R.J.
This is my absolute favorite trampoline site (they test them and do fun/saftey ratings) http://www.trampolinesafety.com/Trampoline-Ratings
We're saving up for the one we really, really want (and keeping an eye on craigslist... it was on once this spring so far, but we were short $).
Orbounder isn't on there (that I saw, taking a glance) but skywalker has very bad safety/performance reviews.