I like the XTP bullets, and carry Underwood 90gr XTP in my LCPs and Underwood 90gr XTP “+P” in my G42.
That being said, Hornady’s original 124gr XTP +P in 9mm with the brass case has caused some feeding issues in both my P365 and G43, both of which have been totally reliable otherwise…. It’s strange that Underwood’s version with the plated case has never caused any issue in those and other guns….
In any case, Hornady’s 124gr XTP +P is no longer on my list of “Carry Ammo” because “feed reliability” of the cartridge takes higher priority over the bullet’s terminal effectiveness. (Underwood’s version of XTP in 9mm and in .380 are still on my “Carry Ammo” list.)