Currently, I prepare my nails with 1x1 inch pieces of 600 grade sandpaper for rough shaping, then old, worn-out pieces of the same (probably de-facto 1200 grade or finer) for final polishing. Many days I do just the polishing. Over the decades (like most of you, probably), I've learned to detect even microscopic roughness by running the opposite thumbnail along each nail.
With all that in mind, would micromesh be worthwhile? It's quite expensive, and I imagine it would be hard to get the thick pads positioned to polish the inside of my nails, where I like to focus the most. I should also mention that I play with relative-short nails (just 1-2 mm past the flesh).