Excellent choice, the 'Fours' or the 'Tigers' are ideal follow on airplanes.

The Kaos' all of them are wonderful sport aerobatic airplanes that fly well indeed and if you are thinking of these as a follow on to the 'Four' great go for it. But not before some experiance with the 'Fours' If you want to see the real Kaos browse here www.bridiradiocontrol.com This is Joe Bridi's site the original designer and something on the order of national pattern champion around six or seven times as well as worlds I think at least once maybe more.

His kits are superb and everyone flys great also they all come out very light, They are light years ahead of the Tower version. He has stopped kit production some time ago and what is left is on that site. Just feast your eyes on the 60 Killer Kaos of which some are left (The last bridi designed Kaos) They are a joy to fly. I still keep one to every once in awhile remind me what its like to fly a truly neutral handling and that means it stays in what ever attitude you put it in and stays there come heck or high water.
I also fly mine off water on cantilever strutted floats.

John