On my Amphion Argons and Totem Arros, I've tried both ways and prefer bi-wired to jumpered. However, I haven't had particularly high-quality jumpers to use for comparison.
Amphion recommended *not* bi-wiring, however.
In the end, as mentioned, speakers will probably respond differently in different configurations, and the end result/preference is probably too subjective to make a blanket statement, so the best thing to do would be try different configurations. The worst case is you'll cycle through a couple of speaker cables or jumpers and sell off the ones you decide not to keep.