I agree with Clean having the best case shape & rehaut engraving. VSF definitely has the better movement, Crystal, fluted bezel, date disc and crown. Out of the box I lean VSF for the movement.
Plating the bezel is a must for either if you opt for a fluted bezel. A genuine bezel is a very pricy upgrade and the plating looks wise gets it very close (FlanDad is who I use for bezel plating). The weight won’t match unless you opt for a genuine 18k white gold Rolex bezel.
Personally, I think both DateJust 41 models benefit greatly from mods.
My build is a pretty extensive super franken:
-Clean case
-VSF movement + gen new style rotor (eliminates rotor noise after service)
-Genuine crystal
-Genuine dial
-Genuine white gold hands
-Genuine WG bezel (replaced prior plated bezel)
-Genuine date disc
-Genuine crown
-Polished rehaut
-Case and bracelet refinished (re-brushed, re-polished to gen spec).
-Movement serviced & regulated
-Waterproofed