Thanks for the comments. I very much appreciate them . . . No, he wasn't named after the camera company, but he sort of was. I'll tell you the story of him, and answer your questions about those two pistols, to a greater extent in a PM tomorrow sometime.
I've owned both, and currently shoot the Air Venturi AV-46M. This is basically an updated IZH-46M, but was not available in a left hand grip. I have a left hand grip Air Venturi. It is handled by Air Venturi, in the USA, who stock parts and other goodies, but the pistol is simple enough to self-service. The AV-46M is more reliable, and it dominated top level competition 'till about 2008 or so, when it was supplanted by more advanced regulated PCP jobs that are out of my price league. I was at the range today, and shot six or seven 3/4" groups with it at 16 yards with iron sights, which is the mid-range trajectory for Field Target, the discipline I shoot in. This was the best I've ever had with pistol, by the way. I've managed to attain mid-level mediocrity with a handgun, lol. More on that later, too. I'd opt for the Air Venturi. It's still a top level shooter.