I'll compare the USA-made PM-2 (camo) to the ZT-0566 - they run about the same cost 'on the street' - and I have them (I don't normally care for imported Spydies!). While the PM-2's S30V blade is thicker, it is slightly shorter, cutting edge-wise, and more pointy than the 0566's ElMax blade, which is more drop point like. The thicker G10 sides of the PM-2 contain a thin and skeletonized SS liner and a thin liner lock, while the SS Hinderer limit equipped frame lock and thick other side - with a properly 'sticky' G10 scale attached. The fit and finish is equivalent for the pair, with the open blade hand hold being slightly more comfortable for my medium+ sized hands with the PM-2. Additionally, that extra SS liner and side thickness adds up - the 0566 is heavier than the PM-2 (... and the larger Ti-framelock 0551's I wanted to replace with something smaller!). Both knives clips - and the assist spring in the 0566 - were easily removed. The 0566 is a super smooth 'flipper' now... actually smoother than the PM-2. Both arrived nearly scarey sharp. As to favorite steels, I have to say, "Yes!". S30V was my favorite... until I 'discovered', thanks to Boker then Benchmade, the Bohler super steels (N690, m390, ElMax, etc). All similar in edge-holding - but the S30V seems harder and more arduous to keep up. My favorite of the pair is the 0566... however...
Last summer, my loving bride gifted me a ZT-0777 from our local sharp thing emporium, having finally saved the $600 (MSRP) + s/t for it. I was shocked... I had seen the prototypes at the BLADE shows, deciding then it 'wasn't for me'. Too much money... and bling. Neat shape of a kinife, however. With her blessing, I sold it. Skip ahead to this summer - money is tighter these days. No knife purchases since last fall. My wife permitted me to purchase both a ZT-566 and a 0770CF, at a total local cost just over a third of the 0777 from last summer, as this year's birthday present. Upon arriving home, I removed the clips and assist springs - great improvement. The 0770CF, identical in shape/size, excepting the sculpted CF scales of the 0777 (I took pictures of it to prove - to myself - I once owned a 0777!), is the keeper here. Similar cost to the PM-2 and 0566 - lighter by far than either - a great pocket carry. The same thickness as the also ElMax blade of the 0566, it is like a swept Wharncliffe-type blade in the 0770CF. It's thumb jimping is softened - and on the blade's spine as opposed to mainly on the handle, like the 0566. The PM-2's jimping is sharp and upswept, making it the least comfortable to use of the trio. The 0770CF is by far my favorite; the PM-2 happens to be my least favorite Spyderco - I actually carry my CF Dodo's more often!
Stainz