If you bi-wire now and do not know if there are any benefits, why bother?
There is no simple answer as the whole question of bi wiring is highly controversial. My own advice is to go for one really good pair, like Cardas GRs or GCs or equivalent and a pair of jumpers. If you do bi wire I would go with the dedicated bi wire cables [ one set of connectors on one end and two on the other] rather than 2 different sets. I have bi wired , bi amped and whatever and found that results vary with equipment and your taste.
Bi-wiring makes no difference at all, unless you're using cables with a gauge of wire too small for the length and speaker impedance.Simply not true.
The answer depends on the particular speaker and the crossover design.
It does't take golden ears to hear the difference between bi-wiring and single wiring (with jumpers) on a pair of speakers designed for bi-wiring.
I once owned Silverline Sonata III loudspeakers, which Alan Yun the owner of Silverline, adamantly stated were designed to be bi-wired and sounded best bi-wired. I bi-wired them for a year or so, until I decided to try some new cabling. For the new cabling, I ordered a bi-wire pair, and a single wire pair with matching jumpers.
I preferred the single wire connection. To me, the sound had better focus, and the speakers disappeared better, so I kept the single wire pair and returned the bi-wire pair.
The point being that even on speakers designed for bi-wiring, it pays to try both methods with the same cabling and decide for yourself which method sounds best.