I have the FNP9 and FNP9M. Neither has ever jammed out of several thousand rds thru both. More accurate by far than me. The M is my primary carry. Thought about switching to a compact 45 but the M is almost exactly the same dimensions and weights 12 oz less. Also 16 rds vs 8. Only reason I don't go with the 40 is just not wanting to add another caliber to my ammo stockpile. As far as the FN45 goes, all I've heard is good but I'm just not ready to add another "big" 45 to the stable.