I have a DAS Keyboard with brown Cherry switches. They are 45g to activate, and not clicky. The keyboard is not silent, but it is certainly not noisy, either.
This is the best feeling keyboard I own, and maybe the best feeling one I have ever owned. I have pounded the crap out of it for over a year and it still works, as one would expect. Every time I shop for a laptop, I just cringe when I feel the keys and I think about spending all day using it.