The die-cast one was the Thrustmaster HOTAS Cougar, based on the F-16 stick. It was designed to be modular as well, with plans for additional replica sticks, first one being for the F/A-18, but nothing ever came of it. There was a touch of irony about it, being that some people would complain about it not being made out of the same die-cast metal as the F-16 stick - but then, neither is the one in the plane....
In terms of general usability and comfort though, I prefer the shape of the old Thrustmaster FCS, simple 4-button + hat design. I think it's supposed to be a reproduction of the F-4 stick.
For space sims, I preferred the CH brand controllers, which had almost no tension at all to the point of being limp. They didn't feel right for conventional sims though. And the sticks were so big, it seemed like a gorilla would be comfortable using it...
