If you check the other thread:
http://www.reefcentral.com/forums/sh....php?t=1783536
There has been a lot of progress. One person even has the LED control coded in. We have almost solved the last problem with the design so it shouldn't be long now for an "initial" release version.
You don't have to be an EE to do this stuff(though I'm heading that route). The whole idea behind these designs are that in the end, anyone with decent soldering skills and the ability to analyze examples will be able to create their own custom controller SEVERAL hundred dollars cheaper with even more functionality.
As for which to go with, that's entirely up to you. A commercial controller will get you up and running almost immediately, but building yours will take a bit of time. Just have to ask yourself if you feel like doing a neat project or if your time/interest is worth $500 more.