[capableweb]

After uTorrent went south, I started using qBittorent on all platforms and haven't looked back since. Found it better than any alternative, might want to give it a try if you want client+ui in one package: https://www.qbittorrent.org/

[arkadiyt]

I wanted to evaluate it in the past but their downloads page has a giant warning, "The macOS version is not well supported", so I didn't bother downloading it.

[eatbitseveryday]

I am actively trying to use it on macOS/M1 and it does have bugs. Random crashes every few days, UI crawling (doing anything, right click, whatever) with more than 20 torrents, etc.

[dt2m]

The GUI is buggy to say the least, but the actual torrent transfers are faster in every step of the way compared to Transmission 3.x in my testing.