I've recently been thinking of selling my 75B (stock except for Crimson Trace lasergrips) and replacing it with a P-09.
It has been described as having a similar internal slide rail layout to the 75 family and being one of the softest-shooting full-sized pistols.
Does anyone have an opinion either way?
What do you use your 75 B for? What would you use the P-09 for?
The P-09 is a bit lighter than the 75 B; thus, the P-09 generates about 14% more free recoil. I wouldn't count on the polymer frame absorbing most of that increase, as the polymer seems quite stiff. The polymer used in the 75 P-07 Duty, the 1st generation P-07, was subject to warping, especially in guns chambered in .40 S&W, so I think the P-09 and gen2 P-07 use a stiffer and thicker polymer.
The P-09 is less expensive, a bit lighter (a plus if you plan to carry it), and has a magazine that holds three more rounds than the 75 B. If you plan to carry it in an urban setting that has defunded police, instituted no-cash bail, and promotes domestic terrorism, the P-09 might make sense. For home or vehicle defense, or as a range toy, the 75 B is, I think, superior, as it should be the better shooter.
Regardless, I'm a member of the Never Sell a Gun Club, unless you happen to have a defective or completely unsuitable gun. One is never enough, and diversity in size and chambering is a plus.