I've been looking to pickup another small Axis lock folder and have been looking at both of these. From what I've read the super deep hollow grind on the 527 produces a VERY thin tip, but I couldn't imagine the tip on the 555 being much thicker considering it is a hollow grind as well. Neither would I consider to have a beefy tip and/or used for prying anything. The 556 and the 525 would obviously have thicker tips not being hollow ground. I too would love to see a comparison pick of these 4 (555, 556, 527, 525).