Hi Heady,
I'll have to agree with you on that point. My first Cylinder cut mower was a 14 inch Model 45 and to this day I still have it but have repowered it with an Orange 2.5 hp Briggs from the original 2 hp Silver Briggs that was fitted to it in 1968. It served me well on much the same size lawn area as you have, if anything probably a bit larger, but now I use a 20 inch Series 1 which is the most desirable Scotty out there, also my lawn size has tripled thus the 14 took far too long.
If you have any more questions please feel free to ask.
Cheers,
BB.