I think it really depends on your ball striking ability, not your handicap. I have always used Mizuno clubs because of their purity of feel and workability Not because of length. Even if you are a scratch golfer, then the most game improvement Mizuno irons will still offer you some workability
I like the 919HMB. They offer all the distance and forgiveness of a GI iron with the feel and look of a blade.
Just my VHO