That's a good answer.

As for what's better, unless you are competing in something that requires the last little bit of power out of your engine, it doesn't matter, neither is better than the other.

That's not to say they aren't different, and that there aren't different "care and feeding" procedures for the different types that help your engine live longer. Also, note that there are actually several different styles of non-ringed engine. Most are ABC/N, but some (such as norvell and some Fox and K&B engines) are non-ringed but not ABC/N.