are now made in China with Japanese steels.
Vapors are a very well designed (by Ken Onion)
Frame-lock which has a very good reputation for strength and reliability - due to its simplicity and elegance of utilizing the full frame/scale/handle width of material (in this case steel) to form the lock-block.
The Frame-lock is exemplified by the lengendary Chris Reeve Sebenza.
I have one of the earlier ones (made in Japan) but I don't think that it should make any material difference where they are made.
Fortunately for most of us these are available at Wal*Mart for the very attractive price of under $20 - which I think is a Bargain of several magitudes - so one can handle and examine the actual knife one intends to purchase.
Personally I like my frame-locks to cover at least half the width of the blade heel thickness - so one can examine for that.
I really like mine - I think with its drilled lightening holes it is elegant and attractive, the ones I have handled all work smoothly and fine. It is "right-sized" for me - so much so that I wanted a Speed-Safe assisted opening version of the Vapor -
As it was that turned out to be the new Kershaw/Ken Onion LEEK - which led to my long review:
Kershaw/Ken Onion LEEK (pics)
There are quite a few pics of the Vapor in this review.