Hi,
I did most of my kiting on a 2008 Convert a couple of season ago, and they were a great kite, but yes, after a season you're ready to step up to something a little faster.
I was going to reccommend you try out a 2010 Rebel, then I read that you don't want 5 lines

(Just incase you do want to try it, 7m, 9m, 11m demos in store from tomorrow).
For a kite thats great in the waves, and has easy relaunch, the Bandit's are perfect. The Bandit 3 is one-pump this year as well, which is an added bonus. The Bandit's should be hitting Australia's shelves within about 4-6 weeks, if you're keen for a demo we'll have a couple of sizes available as soon as they come in.
Cheers