personna, best and only one. They make injector, SE, and DE blades. I only buy Personna. they make cartridges and disposables as well
I think Personnas are as good as any blade made anywhere and they can be found pretty cheap too. Amazon has them for under $13/100 shipped.
I do like the Personna blues but the reds I have are marked Made in Israel. I guess they make them in two countries, not sure where the med preps are from.
Personna/American Safety Razor, the makers of the GEM Blue Star and Treet single edge blades, and also the CVS brand of Trac II and Atra cartridges.
The Personna Med Preps and what we generally call the Personna Lab Blues are the U.S. made Personna's. There are many Israeli made Personna's such as the Israeli Red, Crystal, TOMY, and Viking's Sword. Some of the Israeli blades may be the same blade packaged for different markets. For instance, the packaging used for the Israeli Red's in the UK is "Blue" and completely different.