So:
<$300
No flipper
Frame/liner lock
PB washers.
Correct me if I'm wrong but doesn't the 0550/1 use the KVT? Or is it just the 0560/1?
It is very easy to replace the washers if you really don't like teflon. I had a LionSteel SR-1 with teflon washers and they worked great, blade flew out like a rocket. Only reason I sold it was it was too large for EDC (I work in an office). According to DPX's website it has pb washers. However, I do know for a fact that LionSteel uses teflon, so I'm not sure about the DPx. I do have a HEAT/F OD green and I'll check right now to see if I can tell what it has.
Absolutely! the price of the Phosphor Bronze washers is a few $$ Very easy to replace. I get mine from USAKnifemaker I fit them to all my Enlan EL-01's and it makes a noticeable difference.