For years and years, I went through vest after vest after pack after pack. None of them quite did it for me. Finally, last winter, I went on a mission to find the be-all end-all, the perfect one for me. I did extensive research on dozens of chest, hip, and sling packs, and spent a lot of time comparing features, reading user reviews, talking to guides and fly shop owners, and even e-mailing some of the companies themselves. This is the pack that I landed on: https://vedavoo.com/...ct/beast-sling/
It's a little over your stated budget of $110, but I still think it's worth a look. I would encourage you to watch the video on the page I've provided a link to. It goes over some of the features of the pack that aren't obvious just from looking at it. The guy in the video is the owner of the company. One thing he doesn't mention in the video, but that was a big factor in my deciding to buy the pack, is that it's designed to leave the shoulder of your casting arm untouched by the pack. To that end, they build both right-handed and left-handed version of the pack.
I had to grit my teeth really hard to pay that much for a pack, but I have not regretted it for one second. I feel like I've found what I was looking for all those years. For what it's worth.