Medium all around, and I have size large glove hands. It's really unfortunate and annoying that HK didn't go the P2000 route with backstraps for the P30 and VP series. What I mean by that is, the larger P2K backstraps also have the arch section, so the
entire backstrap is pushed backwards. That just makes sense as most people with larger hands not only need more room front to back, but probably also need a bit of added distance for trigger reach. Unfortunately the P30 and VP series just have increased size in the palm area, which to me feels like a gigantic tumor on the back of the gun, Glock-style. Very annoying.
I would LOVE to throw some money at a company to experiment with creating new backstraps for the VP and P30 series. A few months back I actually asked a company that 3D prints some other minor gun components, but they were not interested. If anyone has a line on someone who is, let me know!