I just got my controller last week, and have literally been spending every free chance I have tweaking it. I have 2 MP10es, and splurged on the WXW, and can't tell you how freaking sweet it is to hear those things change automatically all day. It's really made a difference in terms of dead spots in my tank by cycling through the different modes throughout the day while sometimes syncing the pumps while other time periods they are set to antisync. It's also quite nice to enter anyone of the feed modes and see them change without trying to hold down the Mode button just right. They'll only work if you have the wireless Ecosmart drivers. The other nice thing is that you can plug them into a basic outlet, but still have all of the same programming functionality as if they were plugged into your EB8. ie: turn them on/off wirelessly even though they are plugged into a standard outlet. I was quite skeptical when I splurged on the extra doodad, but as you can tell I'm more than sold on it now.
One thing to consider is if you will be close enough to a network outlet, or if you'll want to go wireless. If you want to go wireless, a quick simple way is to buy a Netgear WNCE2001.
I wish I would have bought the breakout box, or a serial cable, not because I wouldn't rather cut and splice my own contraption, but finding a freaking minidin 8 cable in any local store was next to impossible, so ended up buying one online for $12, but spent 2 hours going store to store thinking I could just grab one off the shelf and go.. At the time of ordering I didn't realize how many uses there could be for float switches seeing as I already had my ATO setup and going.
Anyways, I could go on about how nifty this thing is, but will let you be the judge when you get it.
Read Alans Unofficial manual before you decide to buy, and then again before you set it up. It'll save you a migraine.
Happy Reefing.. John