Went for reds. Keyboard very nice apart from one really flipping annoying "feature" and that is the cherry lock function. Perfect for games but when in office mode, which honest is what this keyboard will be spending most of its time in, it has the scariest bright white LED under the windows key that you've ever seen.
On a positive not it's a lot quieter than the reds are in the K63. it's about the same as an old Cherry business line keyboard on noise. Absolutely glorious to type on though and the wrist rest and positioning is perfect.
I'll desolder that LED this evening as it appears no warranty stickers are obscuring any screws