I would say if you prefer striker fired and want to save some $$$$ go for the Shield. If you like 1911 style or hammer fired go for the P938. My only criticism of the P938 is it's got ambi safety and I would prefer no safety because it's SA anyway. However the safety is unobtrusive and doesn't get in the way. Another endorsement for the Shield is that the Glock Fanboys seem to be shunning the new Glock 43 and keeping their Shields or G26's.