Second the lynx from diylightanimation.com if you want to solder up your own, or pick up the Minleon commercial version.
The diy version can be 40 amps feed from 2 circuits which you will never need if you use leds. The Minleon is only 20 amps.
They both have a test mode to light up all 16 outputs, you don't read about blown triacs on RJ's design, and they are way less money.
Alan