I’ve owned a 721 and currently own a 921. Regularly rode in a buddies older Blazer (Believe it was 210?). Didn’t ride too bad but both of the Phoenix boats I owned were significantly better in rough water IMHO and had a better fishing platform (921 significantly better). I thought the fit and finish on his boat was average at best. Other than speed I can’t think of anything the Blazer does better at than a Phoenix. Also believ it’s easier to find a used Phoenix and easier to sell a Phoenix (certainly would be in my area).