The ZDZ-60RV would be my first choice.
With a weight of 4 lbs. and 6.5 hp.
the power/weight/size are great in these 28% WH planes.

The DA-50 at 5 hp. and about the same weight ready to fly, would be my 2nd choice.
Then the 3W-50 at 4.8 hp. and a little more weight ready to fly, would be my 3rd choice.

For yourself as well as others, fly what ever you like.
The planes fly well on all these engines.