For easy, obtrusive carry, it's hard to beat a 2 spring ALOX like the Soldier, Pioneer, or variant like the Electrician or Pioneer Rancher (my favorite). My personal EDC though, for many years, is a Cybertool 29. It's 4 springs thick, which makes it thicker than it is broad, and feels like a lump in the pocket. But the usefulness that the Cybertool 29 has to offer with its multi-bit tool is indefensible to me, and overall has been the most useful thing I've ever put in my pocket. Combined with a Leatherman Squirt PS4 on my keychain, there's really no true "need" for me to carry anything else to tackle anything that I might be confronted with in daily urban life. Of course, I still carry other knives and tools, but if I had to choose a minimum, it'd be the Cybertool 29 and the Squirt PS4. If I had to narrow it down to one, I'd probably still choose the Cybertool, but a very close second would be the Victorinox Pioneer Rancher.