Zack says
 

Watching the Zack channel recently, I saw he had a very nice bell. What is the loudest or best on the market?

Spurcycle. Not cheap but it’s loud and rings for a long time.

I got a Crane 'Suzu' on my townie/cruiser bike. https://www.cranebellco.com/suzu-bell
It's the loudest bell I own and is noticeably louder than other bells I've heard. Plus it's beautifully made.

+1 for Spurcycle and then several more +s for it. I have a bunch of them on different bikes.

Had a Crane but the spring weaken on me. Little if any sound came out then. Anyone else had this problem?

If you're riding in traffic and want something *really* loud, try an Air Horn!

I also have the Spurcycle Bell. The Crane Suzu is louder than the Spurcycle bell. If you want the loudest bell than you want the Lion Bellworks Bell

My bell is a $0.99 deal from Amazon. It is mounted where I can barely get to it. It does, however, put me in full compliance with the law as an audible signalling device - "A bicycle must be equipped with a bell or other audible device that can be heard at least 100 feet away, but not a siren or whistle."