Would you able to share the difference between them?
My layman guess in terms of circuitry is WS, RVE and Deluxe will have the same 8 phase IR design differentiated by different capacitors. RVE and Deluxe/WS will separated by how deep tweaks their Bios can offer.
While Pro and A will likely use a 4 phase doublers. Will they use IR circuits? Pro will have all those bundled extras while A is basic board only. imo A should have been a M (matx)
Not sure how important this is but HEDT do have higher power requirement than the mainstream procs.
Imo, we need a pure good quality board without those fancy extras. Do gamers use wifi?