Corsair mechanical series. I have the K65 RGB. It's great. I have Cherry MX RED switches which feel great to the touch, and the keyboard is just the right size. However, it has no macros, unlike the K95. This is no problem for me, especially due to my M95 having macro keys.
Ducky are also very good keyboards. Built well and feel good to type on.
Razer, is all plastic made, and in my opinion, look cheap despite their hefty price tag. Corsair is fully aluminium and looks very sleek.
Hope this helps you decide :33