For a long time, I had many .91FS class planes. Some of the planes I had an OS .91FS in are :

Kyosho Sukhoi - 6lbs (.40, yes .40 !) : Flew awsome with the .91 ! The Hobbico looks to be the same (almost)
Kyosho AgWagon - 6.75 lbs
World Models Super Chipmunk - 8 lbs : Flew it well and had good vertical but not unlimited of course
Kangke Staudacher - 8 lbs : Flew the plane fine but like the Chippy, had good vertical but not unlimited
Global Ultimate - 8 lbs : Flew it well, but again, the weight made it IMAC and not 3D

I seemed to use a 14x6 MA Classic the most but had a Graupner 13x5 3-blade on the Chippy with very nice results.

Hope this helps.

CJ