I have a Saito 82 on a Sig 4* 60.
To me this has been just about the perfect combo.
Running a MAS 14X6 tops out at 10000 and I get consistent idle at 1900 ~ 2100 with Coolpower 15% and 2.5oz added castor.
It will hold the 4* vertical longer than my skills will permit.
This is my first Saito and I like it much better than the FS70 which is on an ultra stick.
The only problem I had with the 82 is that it is so light I had to install a Higley Ultra Heavy Hub (4oz) to balance the 4* and this was after locating the battery under the fuel tank.