My review is based solely on cycling classes as I've never done anything else at FSY. I love that I can sign up ahead of time so I don't have to show up ridiculously early to get a spot. Classes always start on time which I really appreciate as well. I can get in, burn some serious calories, and get out in under an hour. There are 2 decent showers and a small but clean locker room/restroom. The instructors are all high energy, honest, and fun--each with their own style.
The only negative points for me are their current online system for account management/class signup and the new pricing. I was able to keep my old rate ($89/month) but everyone I've brought in since the March 2016 price change (using the 4 for $4) has said they LOVE FSY but it's out of their budget now. Cycle is now $139/month. Fitness is now $139/month. Or you can get both for $236/month. Steep increase. I wouldn't be able to afford the new pricing but if money isn't an issue for you, it's fun and you'll get a good workout.
I believe they give a student discount but not miltary, LE, fire, or EMT discount.