Can't comment on the Red 7 or the Huki, never paddled either. As far as I know, you can't even get a Red 7 in Canada, but I do know the Fenn xt double. Have paddled it in a variety of conditions and it was stellar. Boringly stable, yet fast and able to get on runs.
Story to go to the skis' credit. At one of our races a few weeks ago, one of our regulars brought his 8 year old daughter to race with him (she's a regular now).
While dad was working away in the front, she was sawing logs. She fell asleep in the back and stayed in. That is a stable ski.
Beg, borrow and steal the opportunity to paddle one if you can. Its worth it to try as many different ones as you can.
Sean
PS - To any parent who might think its not wise to sit in the front and not be able to see your kids. Don't worry - she was tied in with a leash. If she had fallen out while sleeping, he'd have felt the drag. Matt is strong, but not that strong. Good luck at the Mayor's Cup my friend!