CIL,
Sorry to hear about the bent shaft. But I'm glad you got it fixed.
mendymom,
A 66-4 is nice.
I have ( I think ) 3 66-1s, two updated to side clamp, 1 66-4, 3- 66-18s. I think that equals 7 doesn't it? And I've recently traded off a 66-4 and a 66-16.
What I've learned is the actual stitching is no different between them. They're all great. It's just the ones with reverse are a wee bit handier.
Joe