If he's wanting new rims, and he wants them to be hub-centric, he's still only going to have certain options.
First - he has to find the wheels he wants
Second - he has to determine what centerbores are available stock for those wheels.
Third - if the available centerbore(s) are not exact, he'd either have to determine whether the manufacturer will be willing to make a one-off set of wheels to his specs (in which case he'd be wise to go ahead and get one or two extras made at the same time - just in case), or, go back to the original plan of measuring hubs and wheels and ordering specific sized hub-centric rings.
In my opinion though, all that will still depend on which tires he plans to use with the new wheels. If it's going to be the Grabbers again (as displayed in his gallery), zero vibration is always going to be difficult to achieve regardless of rim choice.