So I got the Mako and the Pro Boss last week. I've played 2 rounds with only those 2 disks. Pro Boss is great, but I don't have the arm to keep it in my bag. I was getting great distance with it when thrown full on, but not much further than I get with Wraiths. I still have form problems. It does glide better than other bosses I've thrown.
The Mako: It works as advertised, but I don't know if It will stay in my bag for long. I can get it to flip over, but I have to throw it over speed to make that happen. It has a very similar flight path to a buzz (or coyote thrown slower than needed to flip). I like the feel of the rim which is very similar to a coyote. Handed both discs, I would be hard-pressed to differentiate them.