At bottom, IMO, quality is the first issue when making a purchase. In your case, if the foreign knives are definitely of a higher quality than the USA knives, buy them, and teach some sorry, lazy USA asses a lesson! If there is no apparent difference, then stick with the USA version out of loyalty to your own country.
A more difficult issue arises when certain components are of foreign origin, but assembled in the USA. But look at the batch of posts above and use them as a guide. I like what I am seeing. Freepers know what/where the really good stuff is.
Case knives are still handmade in Pennsylvania, and still the best IMHO. I think the best knives are German, Japanese and American. I will never buy another Chinese made knife because of the sloppy finishing and poor steel. You get what you pay for.