Glad to see this thread is still well and alive!
Not just any Kevlar though. Ashaway's kevlar is braided, I believe that helps to soften the string.
Going to save you guys some time and money, After a lot of time spent stringing, trying out, money on all sorts of mains.
I can say kevlar mains is superior to every other main I've tried (hyperG, zx monogut mains 17, pros pro red devil, blackout, blackforce, Yonex pro poly tour 17, volkl cyclone 17, ghost wire 1.10).
Superior in durability, superior in a soft feel (not sure why kevlar get the harsh bad wrap, just stringing it you can tell it's super soft), acoustics it's thud not pingy
Not just any Kevlar though. Ashaway's kevlar is braided, I believe that helps to soften the string.