Ton, my Vanilla Rs are spot on for me, with the standard spring. (15stone) but I do like mine to move, if you know what I mean
They seem like very good forks to me. Not much to faff with (No lockout for instance) but I don’t miss that much. Stiff enough, fairly light, well made.
I think the springs themselves are cheaper than £35 RS ones so getting the right one will be cheaper…
After using both RS and Fox coil forks I’d say there was virtually nothing in it regarding performance, but the Vans have preload adjustment, and I was sort of ‘between springs’ with RS Recons and they have no preload to tune that out. That’s the only real difference