I've had both, and they both have +- on either one. The SERE is cool because it disappears in the pocket, and it the smoothest opening knife I've ever had. The handle is very comfortable, but thick, like a hammer. And I prefer the VG10 of the AlMar to the S30V of the Spyderco. The minuses for me were no thumb ramp notches, and no way to choke up on the blade. Also the tip is too thin. The Manix has a finger choil which I love, monster lockback, almost infallible, but the grip is somewhat specified, it either fits you or it doesn't. ANd for me the manix is to thin in the handle, and the blade has a distal taper, which I am not a fan of, never saw the point in making a hard use tactical knife with an easily breakable tip. Both are cool though. Hope this sheds a little light. As always, YMMV>