Comparing my 0298 Micra with an unused PS4 that I got from Leatherman Warranty after sending in a Style PS with a broken scissor spring: Advantage Micra. After 17 years of almost daily use, it looks almost like new. We'll see how the PS4 does after a bit of carry and use, but you know, paint. Advantage PS4. Both blade shapes are okay with me, but the Squirt has more convenient outside opening and is better positioned for cutting while the Micra blade is a bit awkward to get out and not in an optimum place for best use. Both get the job done, though, but the PS4 is more elegant, also the keychain ring is at the butt instead of crowding the blade as in the Micra. However... Advantage Micra. Fold it out and you have a useful and versatile extension. That's how I use the blade about half the time. Not possible with the PS4. Advantage Micra. Flathead driver is longer, sharper cut than on the PS4, and... Advantage Micra. The flathead driver extends, which capability I also use half the time. Advantage Micra, although that depends to an extent on personal preference between a grooming tool or a small rasp. Also, the Micra file extends, the PS4's does not. I prefer the nail file, but YMMV. No advantage. The Micra ph driver is longer, the PS4's is pointier. Both are just fine. No advantage. Both extend. Advantage Micra. Much better bottle opener, plus a tiny screwdriver that the PS4 lacks, also tweezers and ruler, which I forgot to show. PS4 gives up a lot in exchange for dinky scissors. Advantage PS4. These pliers are pretty good, and the Micra doesn't have them. Advantage Micra. Although the PS4 scissors are sharp, clearly the Micra has the size. So there we are. Be nice.