Mister does Neo Geo very well, pricey but I think it's worth running a mister in an arcade. However, mistercade is expensive and not the only way to go about it.
I run three and four button games on the neo cab happily, older console games. I put on a Neo Geo classic when people come around. Windjammers, Metal Slug 3, etc.
IMO and know I'll get hate, original gear is not worth it in today's market unless it's a top 10 game for you. For example I have SF2 hyperfighting and will happily play it every day. Not much else that I can say the same for.