Having exp with all of the dual line kites skyburner has produced, i hope I can help.
NikNak, WidowMaker, and Freestylist youve heard about. So that leaves...
Pro Dancer SUL- This, is one heck of a kite. Its extremely solid, and is great or the SUL winds in precision competition. That thing tracks like a maniac. It can do trick's if you know how to do it. If you want a backflip that you can come out of, id add just a bit of weight in the tail. If not, your'e set. Its an amazing kite and the build quality is amazing. It works well indoors for dramatic flys too.
Inak- AWESOME indoor kite. Does great throws and catches. Great build quality. Great kite for the price. If youre looking for indoor kites, this is a winner.
Heat- The heat, to me, is almost like a combined voodoo and wahoo. Great old school tricks, good turn radius. Nice tracking. Again, build quality is great.
ADX- I havent had A TON of exp with this one, but from what I've flown it I like it. Again, this kite seems to do better at the oder style tricks. I remember nice backspins and again, good tracking. Also, great build quality as to be expected.
Delta Drive- This one's a blast. Its a good trick kite with good pull, which i really like. Awesome tracking. The UL's also great. I haven't flown the vent. All around nice kite. Again, awesome build quality. Nice weight system if i recall- It reminds me of the Skysails delphi.
T&T comp- Nice solid full-sized comp kite. Great Tracking. Great Pull- Everything I like in a precision kite or a team kite. All the versions are great. Does well pulling a tail too. Again, awesome build quality.
Sorry if these dont help much- I figured Id try to post a little something before my next class