The two cars are so different.
When I was looking, I tried to ride in every brand I was looking at. Then looked at how the over all kit looked when completed, and asked the owners how hard it was to finish the car.
I think the Unique is closer in appearance to the originals than the FFR does (IMO). It should be more expensive, but I do not know. Go see some finished cars, and bum rides when ever possible!
eric