I've recently gone through 3 mechanical keyboards.
I got a Gamdias HERMES P3 RGB Mechanical Low-Profile Aluminum Gaming Keyboard [Brown Switches] - Brown Switches, Anti-Ghosting promoted through a purchase from iBuyPower. The feel and action is to my liking but it only has a right side Windows/Command (Mac) key so it's annoying to use for a lot of keyboarding.
I liked it so much I went looking for a more Mac-friendly keyboard and tried a Havit.
Mechanical Keyboard HAVIT RGB Backlit Wired Gaming Keyboard Extra-Thin & Light, Kailh Latest Low Profile Blue Switches, 104 Keys N-Key Rollover HV-KB395L (Black)
It was nice but when the Mac went to sleep the keyboard did not wake up when the Mac did.
Currently, I'm working on a Code.
Code V3 104-Key Illuminated Mechanical Keyboard - White LED Backlighting, Black Case (Cherry MX Blue)
It's good but doesn't have all the fun LED craziness the gamer keyboards have

There's a page somewhere that explains the differences between the "color" switches.
Trying to find a keyboard with all the right keys (104 in my case), full size (I got meaty paws), the right switches (brown or blue), not wireless and system-friendly (Mac, in my case) is definitely a chore. I think it took me 3 days of googling to settle on the Havit and then more for the Code.
The Das looks nice! I didn't like what some of the reviews said about the Ducky.