FWIW, I spent many pow days this season skiing a 184 BG (16/17), with a couple days on the asymmetrical 189 17/18. The 184 never felt like it wanted to dive, I'd rather be on the 189, but I was still able to get after it on the 184.
I haven't skied a 191 Kartel 116, but the 186 skied great and had a really balanced feel. If I got a pair it would likely be in the 186cm length, not the 191 length (5'10" ~200lb).