If you are purchasing dimmers and a console at the same time, you have a few more options. Depending on which console you get, you may have the option of using MPX instead of DMX, saving some money, but losing some upgradability in the future. Microplex limits your options to NSI, Leprecon, and Lightronics, but saves you money on cable (uses ordinary mic cable instead of more expensive DMX designed cable), dimmers, and consoles. If you need to upgrade in the future to interace with DMX devices, you can get a MPX-DMX convertor for about $300. Given that you'll save about $100/widget by going MPX instead of DMX, that might be a cost-effective option.
Dimmer packs to look at:
Leprecon LP-360 series
NSI/Leviton DDS series
Lightronics AS series (afaik, LMX=MPX)
fwiw, Rob