I have been thinking about buying one of these machines for a long time. I currently own a shaper 3h.p. with a power feed. Should I just buy a 3'' high corrugated head and profile knives as I need them for my shaper or does the williams and hussey offer way more possibilities ? I am in business ,carpenter with a well stocked small cabinet shop,moving in the direction of working far more in my shop. Any advice from others who have been in this situation is welcome,thanks Mike.