Arthurp, what it comes down to is there really is no substitute for listening for yourself. Just as with any other piece of gear, or even cables, you will get many opinions, which you may or may not agree with in the long run.
I actually don't think that everyone's taste is that much different here, folks just go about things in a different way. Some will buy dark speakers and use bright cables, some will put dark cables on bright speakers, etc. What it comes down to is there is more than one way to skin a cat.
For example, I know Tom uses Nordost Valhalla power cords on his BAT gear. I'm not saying Tom is wrong when he says he finds the ARC Ref 3 to be unnaturally spotlit, but that is how I feel about Nordost Valhalla power cords. Perhaps these spolit cords help to enlighten the darker nature of the BAT for Tom. Different ways of accomplishing a similar goal, musical enjoyment. Sorry Tom, really, I'm not picking on you. I do believe that your system sounds great.
In my case, my speakers (Verity Audio) are known for being on the darker side of neutral, perhaps this is why I preffered the ARC to the BAT.
So to review, positives ARC more articulate and revealing. BAT more dynamic and powerful. Negatives, ARC can sound bright to some. BAT can sound dark to some. The key is which will work best for you Arthurp. Which direction does your system need to go in YOUR opinion?
Cheers,
John