I just talked to randy from GGG today. very nice guy!!! and now I have so much information and decision needs to make. it's basically coming down to Andy or Randy. LOL I know they both are good companies. I just want to get the things I need and easy install!
Well, this will sound weird coming from the guy with a 15-page website comparing interfaces, but . . .
I recommend you make sure you get the joysticks you want nailed down first. Unfortunately, this means knowing if you want long-throw or short-throw, or do you care. Unfortunately, for the most part, this also means either buying one of several sticks to compare in a hardboard mockup, or finding a lot of friends with panels that you can see how they feel. With the U360's at $60 each, and the 49-ways at about the same price or more when you include a GPWiz-49 Eco interface, that's a lot of money to put down to decide "Nope, this isn't for me, time to put these on the B/S/T board."
But the point I am getting at is: If you don't like the feel of the sticks compared to something else, it will bother you every time you play your panel. The interfaces all basically do what they are supposed to. So if you only have a single trackball with no spinner and you bought an Opti-Pac to control it, you threw away a lot of money compared to an Opti-Wiz, but it will work fine, and it's just a lesson learned, but once you have the cab built, you'll get over the cost factor.