The SXP is the basically the same as the old Winchester 1200 (1300, 2200, Ranger, etc), with some minor improvements and cosmetic changes. They are great guns and have been used by many military and law enforcement agencies around the world for years.
I learned to shoot with an older 2200 model that my dad purchased new in 1978.
+20000 rds have been thru the gun...replaced the firing pin around 15 000 rds and the action arms assembly at about 18 500 rds. Needless to say they are very dependable and reliable...even if I prefer the Remington 870 Wingmaster!