Running your search on Amazon gives me a first page of 48 tires. Seven are rated 5 stars, one is rated 4 stars, and forty are rated at 4 and a half stars. I'm sure some awful reviews are in there too, but my own experiences rate the three types I've bought (25mm Gatorskin, 35mm Terra Speed, and 25mm Giro tubulars) fairly high. One of the 5 Giros has a removable valve core that wont come out. The Terra Speeds are only 360 grams for a 35mm knobby, but they can be hard to mount - I use Schwalbe lubricant to get them to seat right. Those are the extent of my complaints about the 13 Continental tires I've purchased. Somehow, I doubt where they're made caused either of them.