Pactimo 12hr Summit Stratos is my favorite so far but I have only had about 5 different bib shorts. These are expensive but they have big sales at least a couple of times a year when you can get them 35-50% off.
I also have some other less expensive Pactimo bibs I like. One interesting thing I found was that on my old bike with Sell Anatomic X2 saddle, the cheaper bibs were more comfortable. On my new bike with stock Specialized saddle, the Stratos are way better.

https://www.pactimo.com/collections/...ib-shorts-mens