If you got the dough, Filco branded KBs are generally regarded as the best mechanical keyboards. CM Storm Quickfires (not the Pro's) are generally made from the same OEM, though some specific models might not be.
Ducky KBs might be hard to find, but are also really well made for their price.
On a budget, Rosewill mechanical KBs are really solid.
I've got a Thermaltake Meka G1, which is slightly older than all the more current mechanical keyboards, but I still don't have an issue with it and its Cherry Blacks. They are supposedly made by the Filco oem's too. =)
To add to this, I've found Ducky keyboards at my local Microcenter, and CM Storm Quickfires are Filcos, and you can find some on shelves now that don't have 25 stupid little CM logos on them.
The Filco ninjas are pretty nice though. I'm going to pick up a mechanical keyboard when I get some free cash, I it's either going to be a Ninja, a WASD V2
, or a Noppoo choc mini