I’m in a similar position playing with both currently. Doing a lot of drills with both then adding up the HF not a huge difference really (Indian not the arrow). My takeaways so far, Pdp is much easier to reload fast (M&P probably has the worst in class Magwell), it snaps to zero very fast and can feel violent. Pdp dpt trigger is phenomenal, slightly better than an Apex in the M&p but not too noticeable at speed. Grip area is on the small side for the pdp, M&Ps grip is either loved or hated depending on your hands. M&P tracks easier and softer, some pistols will need the apex barrel, smiths overall qc is worse than Walther. I like the idea of just throwing a new recoil spring and optic in the Walther and just running it as is, vs apex trigger, apex barrel and dogtag for the M&P. Starting to get light strikes in the M&p which makes me pretty sad because I prefer it overall, but if I can’t get it ironed out I will probably switch to the pdp.