I'm looking for a lathe chuck for my small Delta lathe to turn stuff that is about 1 1/2" dia. I'm looking at the Grizzly 5" chucks for about $70.

Q1. What holds more securely...a 3 jaw chuck or a 4 jaw chuck? Either way, it must be self centering...I don't work with anything irregular or square.

Q2. Some chuck jaws have serrations, some don't. How important are serrations?

thanks, Jeff