HS Product manufactures all Springfield handguns that are not 1911s. originally Springfield just sortof served as an importer, lending their name to the HS2000. later the HS became the Springfield XD line, with HS still marketing them as HS in europe (an XD9mm here is the HS9 over there, etc). the XD, XDM, XDS, XDE, and now Hellcat are all made by HS Product in Croatia.
I personally love them. I've owned many variants of the XD, XDM, XDS, and XDE. I tend to prefer their compact 9mm models the best. I've never had a reliability issue with them (that wasn't caused by 75 year old ammo meant for tommy guns). My current carry piece is an XDM9 compact. while I generally shoot glocks more accurately (probably due to better sight picture), I far prefer the ergonomics of springfields and most models have higher ammo capacity than their glock equivalents.
also this is off topic but due to the constant claims I hear from gun shop owners who like to bash on their manufacturer, Croatia is not a 3rd world country. Croatia is an active member of NATO and the UN. they were one of the few european nations that had the good sense to join the EU, but without adopting the euro as their national currency, meaning they weathered the greek economic collapse better than most while enjoying the same growth that many others did in the aftermath. interestingly their tourism skyrocketed due to Game of Throwns as one of the vistas on that show is a real location in Croatia. a strong economy and relatively high standard of living means Croatian companies can actually draw on a decent pool of skilled laborers.