Sports are a fun, solid built plane. Maintenance is for the most part straight forward and not expensive to maintain. It's slow and the climb rate fully loaded is like a friend said "like a Beaver on floats at max gross weight".
They are very responsive, with a rock solid O-320 engine. You do need to be spot on with speeds when landing or it will float. I like the trailing link gear. If you do a weight and balance you need to follow the procedure to "T".
I use mph for everything, outer ring of airspeed indicator. Cruse 2450rpm, 120mph. Yesterday I held 700fpm up to 6,500ft. 60gal fuel, useable 56gal. Most days I get 8.5gph, I use 10gph for flight planning. A solid 5hr flight duration with reserve.
Mine is a 1974 model with two doors, and has the spin kit installed. Very docile in a stall. Heater works great (my wife likes that), and it has remarkability good visibility for a low wing aircraft.
Flown my Sport from the Gulf of Mexico to Alaska, 4 days flying 10hrs a day...
I must say if I were looking for a small Beech single I would go with the Sundowner with the 180hp O-360. Same plane just 180hp vs 150hp.