Thanks for the feedback so far guys. Oldnbroken I appreciate the breakdown...that's really helpful. I've read that the Ozone Edge could sort of be lumped in with the screamer as a big boosty kite as well...looks like I've got my work cut out for me
I've got a pal with Edge kites and they are very good kites, but more high aspect and racey style than the Screamer and Obsession, which I think are good for more variety of styles.
None of that three have a reputation as great surf kites though.
I think the Screamers and Obsessions turn faster and are better for busting tricks than an Edge.
Like everything else, it depends on what you want next, all around or something more specific.
A couple of my pals here really love their C4 kites, and they are not hardcore wake kids, but the range is a little less than with a normal sle/delta/bow shape.
If somebody gave me some cash to blow on a kite from your list, I would probably buy an Obsession, C4 or Catalyst, or an Evo (that is not on your demo list)
....have not owned any of those and would enjoy one of each to try!