I know you are set on buying new, but there are a few more to consider if you widen your search to include secondhand

Any Diana/Original model 5 or 6
Weihrauch HW70

Or if you can be tempted away from spring piston to SSP (Single Shot Pneumatic) then either a brand new Beeman P17, or a secondhand Weihrauch HW40 will outperform most, if not all the pistols in your original shortlist