My favorite all time blade is the Personna Med Preps. They are sharp. They are consistent, meaning smooth the first shave, and the 7th.
Excellent blades.
Excellent blades.
Below is some more info on the various US made Personna blades:
Original thread: http://badgerandblade.com/vb/showthread.php/262737-Personna-Confusion-59353