Honestly, if a few Taiwanese prybars are enough to make you want to change hammer brands you might want to think again. Every major hammer manufacturer that I know of has at least a few import tools. I suppose they do this to try to increase profit margins while still keeping their 'premium' line made here in the USA. To be honest, while it is a little disappointing I can live with that. For example... estwing may have its prybars made overseas, but vaughan has some made overseas too. Then again, vaughan also has this little beauty which is excellent and can be had for like $11 or $12 shipped and is made in the USA too!
As long as it is clearly marked on the tool where it is made and their flagship products are still made here in the USA that's okay with me. If that's what they need to do to remain competitive and be more profitable but still supply us with some great American tools...
For what it's worth, even the vaughan and estwing import prybars do seem to be of good quality, but if you're like me you want to buy only USA ones if you can. If Vaughans USA line of prybars is not enough for you, do a search for 'Dasco Pro' on amazon. The prices of their tools is pretty low overall and they have a pretty nice selection of prybars and other tools all made in the USA. I have a few that have taken quite a beating from hard usage
Regardless of country of origin... I favor vaughan prybars and pullers over estwing. Just so happens at least some of Vaughans prybars are still made here... with estwing, I don't think any of theirs are. I really like Vaughans Bear Claw tools, although I think they are made in japan these days. Anyway they seem to be of great quality. Strangely enough they share a striking resemblance to shark corp's version (i think based in japan). Perhaps they are the OEM for those vaughan tools and maybe some of estwing's too...