Best way to play NeoGeo arcade games: MAME vs Kawaks vs Nebula vs Final Burn Alpha

I'm somewhat new to the emulation scene, and I'm trying to find the best emulator for NeoGeo and CPS1/CPS2 games. I know that there's been plenty of debate on this in the past. Most of the research I've done brought up threads from circa 2007, so I'm guessing:

A) Most of the emulators have had new versions since then.

B) Many of us have new hardware since then, so speed might not be the factor it once was.

Also, be sure to include reasons WHY in your answer

Let's end this debate once and for all!!