I have had this plane for a couple of years, first with a K&B Twist-Head 61, which was "adequate" but not as authoritative as I would like, for use in our hot climate here (only 112 today). I put in a new Tower 75 several months ago, and it is a pretty satisfying airplane. I run a 12x8 APC, tried 13x6 but didn't like it quite as well. Knife edge is great, and one can do a sloppy knife-edge loop if you don't run out of nerve in the last quarter
Some of the comments in other posts above are correct about its desire to snap on hard pull-outs. Do not balance tail-heavy, and go easy on the elevator throws.
Ground handling is fine on asphalt, and landings are good if you keep a little speed on.
Enjoy your Giles, fellows!
Clair