My ZT 0560 is just as solid(if not more) as my 0301 was.
It too is a tank.
The ZT 055X - was more solid than my 0301 was.
I agree. The 0300's seem more tank-like because they have the Strider look and mostly because they're wider and just more "tank" looking. That doesn't make them stronger, though. The 0560 is built basically the same. Probably the same blade thickness. Same steel liner, same 3D machined Titanium and G10. And if anything, ELMAX is a tougher steel. The 560 is just lighter because it's not a wide and it's more milled out. Plus, the KVT will last a lifetime and the Speedsafe on the 0300 might not. They're both tough as it gets, though. Neither one more or less than the other, IMO.