Have a look here:
http://www.evolutioncontrols.co.uk/
I have an 18-circuit pack in mine.
Comes with RS232, Relays, IR and DMX, World clock, etc
It is not diy, if that makes any difference.
Lutron is double in price. Lutron has one processor per application, so if the processor fails, you have no lights at all. The Evolution products have one processor per pack, so you will not have that problem because they are daisy chained all together.
Mode Lighting is very compact and has passive cooling, not fans.