Including the gradient color option.
Probably the best sounding keyboard out of the box.

From the switches Ive tried they all have a pretty creamy sound, but in terms of which ones sound the deepest Id say.

1. Nimbus. Though Ive read Ice Vein is a bit deeper.
2. Reaper
3. Graywood V3. This sounds really good(like marbles) but I would not get it in the office.

EDIT: Dont forget to add the coupon for 45 free switches.