I find it hard to believe that a properly balanced 2-blade prop will be smoother than a properly balanced 3-blader!
While I did not fly my V35B when it had a 2-blade prop, I understand that it was a couple of knots faster than with the current Super-scimitar 3-blade, however, it apparently climbs way better with the 3-blade.
My V35B with the Super-scimitar prop outclimbs any other normally-aspirated 285 hp IO520 engined aeroplane I have flown, with similar load. With full fuel (285 L) and three up, it will consistently make A100 in 10 min.
My best climb to-date is FL180 in 30min/55nm!
Dr 