They were the first multi's that I ever flew back in the mid 70's when I was starting my career. I ended up with about 1000 hours in them, including an honest to goodness engine failure coming out of KGCN. We had a couple of 67's and a 68 model if I remember correctly. Our company liked them because they had more power than a 402 and they could be purchased for quite a bit less money. In later years, they have had an unsavory reputation, but we had few problems with them. Our boss was a stickler on the proper operation of the geared engines. I enjoyed flying them, it was nice having the extra power compared to the 402's. Merry Christmas!