to bi-wire or not?

PS.  I use two separate cables for each speaker.

I recently did a test with my system and could hear a difference in the sound quality when I bi wired.  It helped to separate instruments better in some recordings and the sound stage was a bit better.  I think it all depends upon the gear you have as to whether or not you'll hear any benefit.

 I’ve talked this over with several local dealers who I respect and got  diametrically opposed opinions on this issue.   But the folks at Acoustic Zen and Used Cable  are big supporters of “true“ bi-wiring (by that they mean using two cables to each speaker).    Based on that I took the plunge and purchased a pair of “shotgun” bi-wire Acoustic Zen Satori cables.    As I have used these cables before in “mono” format I will report back my impressions of the difference.

 Thanks to all for their input.

@vinylbliss I own Joseph Audio speakers and I kind of "bi-wire" them. Before I did so I asked Jeff Joseph if he recommended it. He said he didn't think it made much of a difference. I like the effect, but the way I'm approaching it is not transcendent by any means. I only did it because for not much more money I could get the end of my speaker wires to be quad wires on the speaker end (allowing one pair low and one pair high attachment) and single wires to the positive and negative poles on the amplifier. I don't consider this a true bi-wire, which as others note is two separate cables independently from the speaker to the amplifier.  

+1 gdnrbob  

To OP, does Joseph Audio recommend biwiring?  As gdnrbob said above, get loaners from your dealer and check it out for yourself.

Vandersteen crossover designs are optimized for true biwiring and I have, in 30 years of Vandersteen's, never run them any other way.

Richard Vandersteen is a proponent for bi-wiring, but as akg points out, it is speaker dependent.
But, if the speaker manufacturer made the speakers bi-wire-able, then they probably should be.
I think your dealer should be able to provide a loaner pair for you to try, too.
B

+1 akg.  Very speaker dependent.  I have compared single vs. shotgun biwire Satoris on my Soliloquy 6.2s and prefer the biwire, but the difference is not night and day.  On my cables, the high frequency cable is a standard Satori cable and the midwoof cable is specifically designed for that purpose -- not sure how much that is driving the difference between bi and single wire.  I believe Robert at AZ will custom build a shotgun pair for your specific purposes and speakers, but you might want to check on that.  If you're in the NYC area you're welcome to borrow mine for a bit.  

What actually made a bigger improvement than biwiring was adding thin wire jumpers in the banana connectors ALONG WITH biwiring (this was recommended to me by a cable designer that I tried with great skepticism).  This tightened the bass up noticeably and improved imaging to the point that I wouldn't listen without them.  I got mine a while back from Stereovox (now Black Cat?), and IME this is a cheap (and relatively obscure) tweak everyone should try if they can.  

Anyway, hope this helps and best of luck.  BTW, great speakers.  Ironically my final decision was between my 6.2s and the RM22s, and it was a VERY tough decision.  My next speakers will almost certainly be JAs. 

Also depends on the quality of your existing jumpers. If they aren’t up to the task, then you may hear benefits from bi-wiring but it will have more to do with the removal of the poor quality jumpers from the chain than the act of bi-wiring itself.

It is entirely speaker / system dependent.....full stop.

without taking a bi-wire loom for an A-B in-house bake-off, you will never know if a bi-wire is an improvement or a marketing o,scebo. Otherwise, all the blind responses herein are nothing more than anecdotal with no assurance that it will actually work in your system.

So ask your dealer for a weekend loaner for the cables and put it the litmus test,  with the understanding that if you do change, he gets the sale (don't stiff him by then buggering off to the used ads in AGON)

From my experience there is NO benefit to biwiring. My Snell Type AIII's have this as an option and I have heard NO difference either way! IMO it is just a clever marketing ploy to get the gullible to spend more money!