Just received the K390 Endela with the blue FRN and in my non-expert opinion the quality is Outstanding.
Great fit and finish, blade centered, and out of the box the blade open-close action is smooth and precise. Looking forward to seeing how the K390 behavior will be compared to the VG10.
Have been eager to try the Endela as I own a PM2, Para3 and Endura but felt for my purposes they were a little to much for office slacks EDC. Initially settled on the Endura for office slacks carry but still felt that the blade length could attract undue attention if I took it out for some every-day usage around co-workers. Also, my hands are not large so the Endela is a better fit in that regard.
Have since retired from office work, but am still planning on the Endela for around town EDC.
Also own two Delicas with one as a dedicated tool-drawer user. For those shopping around, if you don't need the larger blade size or grip size the Delica is a great tool - every home should have at least one !
rak2