I am a long time HK fan of the USP series. In fact I own 3 USP Compacts in every caliber and carry the USPc 40 as my EDC. That said, I never could get into the P30 for various reasons including the odd place for the decocker. Owning HK's since the mid 1990's, one of the attractions I had to the PPQ was how much it was built to the quality of the HK's I was familiar with.
RomeoTangoBravo: HK VP9 :: First Impressions
I just read a review of the VP9 by a HK forum member that actually handled one and he described the trigger somewhere between a FN FNS and a PPQ. I own both of those guns and there is a huge difference between the two so its hard to believe it will be anywhere near a PPQ since it won't be fully cocked like the PPQ.
HK is a DA/SA gun like Sig and that's what they do best. I see no reason for the PPQ to remain the halo gun of the striker fire world. The VP9 doesn't have HK' s excellent buffer ring to mitigate recoil. It does work well and I am not sure it wasn't included in the VP9???
The Walther is a high quality German gun and gives up nothing in quality to HK. Both are top of the line manufactures that only put out ultra high quality firearms so there really shouldn't be any ******* matches between the brands.
FYI... I was browsing the magazines at Walmart and saw that Massad Ayoob has the PPQ as one of his top 3 picks.