tIANci:
He's talking about the 1.20 size Pheonix Suchoi.

ukrconsul:
The Pheonix Suchoi 1.20 is reasonably well built, but very poorly designed. The hardware is dangerously inadequate, the airplane comes out grossly tailheavy and 2 1/2 pounds overweight with a 1.20, the cowl does not fit the airplane if you mount the engine as recommended, and flight performance is really nasty.

As an example of the latter point: I used half the recommended elevator throw and then set my low rate at 50% of that. Even so, pulling full up from level flight in low rates causes the airplane to stall. It will loop at less that full travel (25% of the recommended) but if you pull full up it just continues in level flight with a porpoising of the tail. (The good news is it won't tip stall.)

I know, I have one. Two flights, two crashes.

The Goldberg Suchoi is a great kit and a great flyer. It may not be worth $580 USD, but the Pheonix is worth less than $0 because it will probably break your engine and radio when it goes in.

Jim