Best out of the box polymer gun I've tried, but I never bought one as it didn't fill a role for me. Too big for IDPA. Trigger isn't as good as an SAO gun and it's lighter than a metal frame which makes it worse for pure target work IMO.
If you're looking for a polymer range toy you could do a lot worse, but for the money a CZ TS is superior. Additionally, being an H&K, you'll pay crazy money for accessories and spares if you can find them. The one I tried had the Jet funnel which is a pricey option. Last thing that stood out to me were the stock sights which were fantastic.
You don't see them in the EE too often which makes me think those who have them like them.