Alright here's my view on it.
When I got it originally it worked fine with maybe a couple issues, after upgrading the firmware on the thing however is when I started running into problems. My biggest complaint is that graphing doesn't work on mine, and that there are sensitivity issues with the touch pad. That being said, most of this is most likely electrical interference since apparently I have quite a "electrically noisy" ballast, however the guys are working on fixing bugs constantly and doing updates so the customer support side of things is fairly good.
Its funny, those I know who have one had issues initially with it, now they have none (or very little), where as I had no issues initially but now that I updated now I do. I wouldn't in any way say there's anything different from a manufacturing standpoint between the setups (i.e. mine is not "broken"), it just doesn't work as well as I'd like. Also I've changed directions a bit, so most of the features really aren't needed for me so it is just "Too much machine" for me with all the doodads and what not, basically its a $500 light timer (and I've also used it as a failsafe for heater control just because I felt I Had to use it for something other than lights)
Although one thing I will say, if it is an electrical interference problem, I don't see how a software update is going to fix it.
That being said mine might be up for sale at a discount fairly soon
Whatever you do, don't take my opinion as the end all be all of how it works, who do you want to listen to? The few bad experiences or the average experience of all users?