Congratulations!!!! I just picked up a used one, minus thumb safety and night sights, myself 2 days ago. I also have an M&P40 to compare to. I like the fit of the .45 frame better for my hands. I wear a size L-XL in gloves. The pistol holds very still during the trigger pull when dry firing. Have an Apex coming today in the mail, along w/ some mags and current gen striker. Will be polishing internals and installing the Apex sear tonight and shooting it tomorrow.
Good luck and enjoy. It's looks to be a great pistol.