FUE vs SMP for scar reduction

[varonil]

I'd like to ask the knowledgeable brothers out there what they would recommend as the best technique for scar repair in my situation.

I've already reduced the visibility of my strip scar quite significantly with 3 FUE into scar sessions with Dr. Robert Jones (see albums in my profile). However the returns after the two later sessions in terms of additional improvement were quite diminishing, I'd say 50-20-5.

It's been close to three years since my last procedure, and I'm contemplating whether to go or a fourth FUE session, or whether to try scalp micro pigmentation (SMP) into the scar.

Grateful for anyone's thoughts on which direction I should take.