I have a Typhoon 3D . It was given to me for doing some repairs to a trainer. For what it is, I guess it`s O.K . Not a lot of damage if you hit something or some one. And it does not have much of a thrill factor , even tho it does some nice 3D stuff.
It would be like riding a bike ,then riding a motorcycle with a 100 hp . There is a big difference.
I have taught a couple of people to fly on the Nexstar and a couple on conventional trainers. I would recommend the Alpha over the Nextstar and getting a instructor for both.