When I was an MSF Instructor I often had students who had not yet ever even sat on a motorcycle, but were asking me "which Harley was the best" (much of my teaching days were in Milwaukee so HD was on a lot of people's radar). I would always encourage them to slow down a bit and first complete the course before buying ANYTHING. In those days the training bikes were either Honda 125cc bikes made specifically for basic riding classes, or some other bikes with up to a 250cc engine. All were relatively light weight bikes. More than one student that decided that riding was for them also decided (wisely) that initially they should consider buying only a light weight bike that was easy to handle and hold off on the heavy Harley until they had a lot more experience. Some students used the basic course to help them decide whether riding was for them, and in some cases decided it was not. Reminded me of some students taking a day's lesson and making one parachute jump. It was enough for them to say to themselves "I've done it" but not something that they would pursue further. I'm sure that some of my students ended up being very glad that they had not gone out and bought a new expensive motorcycle before even completing the basic class. So take the class, enjoy the experience and don't feel you have to rush out and buy what will be your long term ride. That will come in good time.
