Ok, I am a noob with only Arcade@Home frontend experience, but so far Maximus Arcade has taken everything I've thrown at it, and it just laughs in my face. It's so easy to use, massively customizable, and just plain works. I'm now running a Win 8 setup only in my cab, and I haven't had any trouble so far. I keep expecting nothing to work properly in Win 8, especially with software designed for XP and not updated in a while.
Of course, I'm using a 21" PC Multisync monitor instead of a true arcade monitor, but I have MAME, ZSNES, and Supermodel running perfectly so far and looking very nice, IMHO, thanks to the various video options in all 3 emulators. Looking to add other emulators soon! Hopefully Maximus will continue to smile and say, "Thank you, sir.....may I have another?"