I think the results also vary with different speakers and different wire. I would at least recommend that your jumpers be the same as your main cable.
Bi-wire: is it worth it?
I am about to buy a sweet set of used martin logan stats. They have four terminals, and can be bi-wired. Someone has suggested I should bi-wire them. However, this would come at an additional cost, as I would have to buy new speaker cables. Does bi-wiring make a noticeable difference?