I have not. I prefer open combs for how they glide on my face, but I like the aggressiveness level of the 34C. I have not found an open comb that is as friendly as that yet. Anybody got a recommendation?
Any razor can have a different personality with a shim or by changing the blade brand. A 34C with a Feather is different from a 34c with an Astra. Of course, there is always the option of spending $$$ on ATT.