I used the little brother to that head this past season. The 175 express. Fly well, sharpen easy(even for me) and as jimmerc said, they make a nice hole. Bob and Jan Mayo are some of the nicest folk you will meet. send them a hero shot when you strike pay dirt.
The heads are made with an interlocking ferrul system that is nice and strong. I think this is the oldest design on the market today. That speaks for itself. All of the ACE products are great,and they don't break your bank to get set up with them. Good luck
Chuck