Well,
I'm in a little different attitude than the rest. I've had 2 Kangaroo's (the original foam/wood wing one, and the composite one) and I've still got my exocet.

I say go with the Exocet 100% of the way.
The Roo's/Rookies etc fly fine, but they aren't a very true airplane. I never really liked how they flew except that they were jets.

The Exocet tracks like a pattern plane, slows down better than my Roo ever did for landing, will fly blisteringly fast if you want it to, does all the manouvers with ease, is very cost effective for a jet with internal engine and looks good too.
I had a RAM750 in my exocet and that was more than needed. The jet is simply awesome, my kit shipped from france, and the cost of Springair 101 retracts was under $1000. It is a fair bit of work to build, but it's worth it in every aspect.
The CARF stuff does ding easily, it's the nature of that type of construction, having said that, the wings on my Bandit seem to ding easily as well
The wing on the exocet is my only complaint, it's a one piece highly swept wing, it's a bit of a pain to transport but nothing you can't work around.

Anyway, of all the jets you've listed, I say go with an exocet, I can give you any info you want on it, it's a fantastic jet!
Jeremy

http://perso.wanadoo.fr/aviationdesign/Exocet/clients/exocet%201%20(1).JPG