I have Spydies from the USA, Taiwan, China, and Japan. All of the USA Spydies have been wonderful as far as fit and finish. The one I have from Taiwan did take some initial break in, but it's about as close to perfection as I can judge for something that isn't hand built. The one from China is very nice, it exceeded my expectations by a lot. The Japanese made folders have been pretty bad when compared to the others.
Here's a pic of them all (without the third Manix of course, it's still in the mail),

I have 3 Spydies from Japan, a Delica 4, a Stretch, and now a Caly 3.5 in VG-10. The Delica 4 is the only one that came in great functioning order. The Stretch felt like its washers were made from 80 grit sandpaper. I probably opened and closed it a few hundred times, no change. I have an air compressor that goes up to 125 psi, that didn't work. Oiling it to the point of being soaked then another blast of 125 psi didn't work either. Soap and hot water, another blast of air, then oil didn't work. Frustrated, I just took it apart. I'm a mechanic so taking a folding knife apart and putting it back together isn't exactly hard. So what was the problem? It looked as if someone sprinkled fine dirt into the pivot, between the washers, and against the liners. I cleaned all of it out but the damage had been done, it's around 220 grit now. At the time I figured "Oh well, it happens. I'll just deal with it.".
Today my Caly 3.5 VG-10 showed up, it looked great. Opening it was another story. I know it doesn't have washers, I did my home work. When looking inside I could see what looked like thick hair, the action and lock were very gritty. Before trying the "just open and close it a bunch of times and it will get smoother" I got a piece of that "hair" out with a toothpick. I'm pretty sure it was G-10. With only one screw to remove I decided I'd take it apart and do the whole air and oil thing before I got the G-10 shavings worked into the action and lock real good. I blew the handle and lock out with my air compressor and moved onto the blade. While cleaning the grit out of the pivot hole and wiping the tang off I noticed what looked like a chip? It's gritty and textured, it doesn't look like it was done during the process of grinding the blade. Except for that, the Caly 3.5 works perfect now. I'm glad I got it, but this is a common theme when dealing with Caly 3.5s. Below is a pick of the chip on the left hand side of the blade tang just below the pivot (I just noticed it's actually 2 chips):

I know that I've probably voided the warranty on those two, it's alright. I have 6 more with a 7th on the way that are still covered. I can't see spending another $10 to $20 sending them back to the dealer just to get another gritty folder. If they were my first two then I don't know if I would've been so excited about Spyderco. Both are recommended as good for being your first Spyderco, they were on my list as a possible first for sure. I've noticed a lot of posts about Japanese folders having problems recently. If I hadn't seen a post just days ago about the same problem with a Caly 3.5 I might have chalked it up to bad luck. It's not just 1 or 2 posts though, it's many. It seems to happen with the ZDP-189 versions as well. It was also with 2 out of 3 Japanese Spydies that I bought.
I still love my Spyderco folders. They are the best hands down, nothing anybody else makes comes anywhere close for me. Having a $40 Chinese made folder show up in better working condition than a Stretch that I paid $80 for is very puzzling. Having a $118 Caly 3.5 show up that way is down right disheartening. I'd be really perturbed if I had ordered the Caly 3.5 in ZDP for $160-$170.
This is by no means a hate thread, I don't like to put that disclaimer in there but sometimes forums get a little weird. I just felt this should be brought to someones attention. I'd rather say something than not as it's probably an easy fix. Besides, more happy customers=more money=more R&D=more new designs=more awesome Spyderco folders for me!