You should try out the braytech winter wolf or duty bound, those are two of my favourite auto rifles in the game, including somewhat breakneck.
I forgot to mention scathelocke, that rifle ties between braytech winter wolf. I still don't know which one between the two is my favorite, it would be nice if scathelocke had random rolls
I have over 1000 kills on duty bound and I do like it...but not without Zen moment. The weird horizontal recoil really kills it for me. Scathelocke will always be my favorite auto. Stable, sounds good, looks decent, good perks with variety. Most of my post is an issue with general damage in higher end content. Things like menagerie REALLY show you how bad they can be, especially when handcannons are just so good no matter what.
Forgot to mention scathelocke as well, I love that auto, braytech and scathelocke are tied between being my fav auto. This is why I also want random rolls on more year one stuff. Not just the Nessus armor set