The 163cc Briggs and Stratton has a tendency to overheat and seize if you look at it wrong. I've never had this issue with other Briggs models.
The Honda GCV160 is a tried and proven engine. I'd prefer to have a separate cylinder head, but since it works well I really can't complain.
The Honda GCV170 (new for 2020) is my new favorite push mower engine. Hasn't been out long enough to see how it holds up after extended use, but based on Honda's track record I doubt there will be issues. Unlike the GCV160, this is a pushrod engine (no OHC) with a top sump design and separate cylinder head. Seems to have a good bit more power than the GCV160, and much easier to work on (except for the starter.) They also have a GCV200 that's replacing the 190.