Although I don't have any high end point and shoot I did have a box of enter level to mid level point and shoots. I have sold most off, I had Nikon, Pentax, Minolta, Canon, Konica, Olympus, and Chinon. I keep a Pentax WR, a Konica Z up with 28 to 50, and a Chinon with fixed lens 35mm 2.8. In general my experience was that the longer and slower the zoom the slower the AF and longish shutter delay. The Pentax 38 to 70 and Olympus stylist with a semiwide to just over normal had pretty good AF speed. These are the most pocketable. The Konica Zup with 28 to 50 and the Pentax WR are fairly fast, but not really pocketable. First generation AF with fixed and somewhat fast lens, Canon Auto Boy, Chinon, Nikon are in my experience slow.