Most rigid Boyd's stock style ?

[red caddy 51]

OK, I'm gonna replace my much modified (and not very much improved) plastic Axis stock with one of Boyd's. My question is what style gets the best marks for rigidity? (pencil barrel in .223 for now, but better things to come.)

I am leaning towards a laminate thumb hole, but I want to go with the most rigid. (I assume the laminates would be more rigid and the thumbhole is most comfortable for me.)

Pillar or even "V" block bedding is not off the table. I would be most interested in what you guys think...

Let the games begin !

Thanks, Paul