Thanks a lot guys.
A few weekends ago I had about 30 or 40 people over at my place and the arcade never had a moments rest. The big games of the night were Turtles in Time, X-men, Samurai Shodown V, Street Fighter II, Street Fighter III, Metal Slug 5, Hang Time...so on. It was awesome, by 2 in the morning most people were loaded and absolutely hammering on the buttons, to the point where I was mildly concerned. When morning dawned and the dust settled I gave it a Windex and assessed the damage. Not a scratch, the thing is built like a tank.
This has been an incredibly fun project and for all the people sitting on the fence trying to decide whether or not to jump in and build their own, do it. That is if you have the time, space, money, resources and motivation.