I too bought the 11 first and then also got the bk16, 17 and 14, initially I liked the design and look which is why I bought it, but thought the ergonomics were so so with paracord wrap, got the bk14 and zytel, was still slightly underwhelmed,
But just today I finally received some wood scales made by one of the members of the forum, and I am blown away! the feel is awesome, so much so that I am considering selling the bk14 now as I may never pick it up first again. In the end it depends on your budget, as well as whether you want to buy handles for the knife or use it bare or with wrap.
I think the bk11 is a good knife, ergonomics did not work for me too well with paracord, was perfect for utility use, but any harder use would make me reach for the bk14 with paracord. in terms of comfort this is how I would rate my experience,
Bk11 with custom wood scales >bk14 with zytel >bk14 with paracord > bk11 with paracord, depends on whether you want it as a neck knife or as a harder user