I've been mostly shaving with and really liking my 89L. I don't think I could cut myself with it if I tried and I'm getting really smooth shaves with every blade I put in it. Just got a 34C. So far, I've only shaved with it twice using a Derby and my first reaction is (aside from the fact that I just love the feel of it) is that it's much more aggressive than the 89L. The shave seems to be closer but the Derby seemed dull by the second shave and was pulling (my 89L gave me half a dozen smooth shaves with a Derby). It seems to shave more like my 2011 R41, which also didn't like Derby's and was pulling and dull by the second shave.
Anybody else have similar experiences? Different?
Anybody else have similar experiences? Different?