I have and use many MHx blanks. They are straight, light, and have good fit and finish. I haven't broken one.
9' 4wt, 2x 9' 5wts, 2x 10' 4wts, 10' 8wt.
The 10' 4wt is my favourite rod for Stillwater and smaller coho.
All are fast action with fast recovery.