Scott, you know where i stand on the subject. This is a sister event to 422 as 424 compares to 428. I have flown several of these with TT40's. I had a Proud Bird, and AJ and a stinger. All of them fly great with the TT40 and are cheaper to run than the faster versions.
I would like to hear from some of the others out there, especially 424 pilots that might want to give it a try.