6500s are Swedish.
At times there has been assembled in China and made in China but right now all 6500s are Swedish unless it's recently changed.
Several countries have produced them over the years.
But I look at it like this. ABU has a long standing good name in reels. Anything they produce in China is going to be to ABU specifications, not Chinese specifications. The Chinese factories are running the the same milling, machining, balancing, and CNC equipment we are here and that they run in Sweden. I know because every time I need to get a factory tech in for one of our machines.....they are all in China.
The BCX reels are an economy class reel produced in China to ABU specifications. Obviously they are cheaper in price and quality.
Like any other reel company they have different levels of reels at different price ranges to get the market share.
If you want a step up, look at the 6500 rockets and Blue Yonders. They've discontinued the Blue Yonder several times only to bring it back better than before. They have just brought them back again. The blue Yonders are non levelwind reels. So smooth on the cast. Those reels have won numerous casting awards over the years. A little pricey though. The latest offering is up from 169 dollars to 250. Rockets are around 190.
But just a plain 6500 C3 is a solid reel. They'll come with carbon matrix drags and at some point you can upgrade to higher quality bearings like ceramics for 20 bucks, Put a power handle on it......and you got a whole different reel.
If I intended to use them in salt I wouldn't get a C4. The C4 has bearings in the levelwind. They'll quickly turn into bushings in saltwater.