I went with the led buttons like a moth, just thought they look really cool.
My opinion as a novice on arcade builds is ...
Pros.. instant impact, add a controller to show active buttons, set cab colour scheme in light, you can always turn them off!
cons... having to replace faulty ones, not all colours the same, more wiring, may get old fast!
I have them in mine and bought good old concave buttons first, but having seen the led type was like a moth to a flame.
Even though I wanted my colour scheme to have no red in it I fell to the power of the light, originally wanted purple where the red goes but no purple led's ..yet.. I still have my concave top buttons including purple not red so I could change it if I felt the need.
One interesting thing I found is that I have had 3 white led's fail on me almost straight away, all 12v, only white failed! But I don't regret it yet!