I've been testing out various keyboards, also the mechanical ones. The one that I have liked most is the Apple wired keyboard (with numpad). Since I'm using this with windows I remapped a few keys[1] to make it for more suitable for my habits.

The keyboard has low profile and the feeling on the keys is "very precise". Also it is quite affordable.

[1] http://juhap.iki.fi/webdev/keymapper-mappings-for-using-appl...