I've got the earlier version Honda... The gx31 and I have two HF 52cc engines. The HF 52cc has alot more holeshot. It is a two stroke though and made it China. I haven't had any problems with it though, and it did eat a Made it the U.S.A. gearbox up. Not the engines fault.
Bottomline......
Many flats fishermen will chose a 2 stroke over a 4 stoke because it allows them to get up on plane quicker in shallower water so they don't bury the prop in the mud/grass. Same applies to bicycles, It will allow you to arrive at top speed quicker.
Remember though, the HF waterpump does not come with clutch, the auger does, but clutch will/can fit the waterpump.