jamma
It's amazing when you look into something the other possibilities you discover.
Another option i have discovered is to forgo the PC and buy a 1084 in 1 JAMMA Edge Board with the games installed. JAMMA stands for Japanese Amusement Machine Manufacturers' Association. The JAMMA wiring standard allows you remove and insert actual arcade game circuit boards (i.e. plug and play for arcade cabinets).
This specific board has a range of games including many of the Street Fighter II variants, King of Fighters, NBA Jam, Metal Slug, Mortal Kombat and classics like Galaga, Frogger, Donkey Kong etc.
The positives:
- an elegant solution
- possibly closer quality to the original arcade versions
- nice user interface better suited to arcade and large selection of games
The Negatives
- cost prohibitive ($400)
- more involved to set up
- compatibility with a PC monitor (something i need to check, a proper arcade monitor might be better, which leads to the final negative)
- increased chance of electrocution
Then again, might be able to do both.