Question about Sanden A/C Compressors

OK guy's, I have A question about Sanden 508 A/C compressors. How do the "Sanden Style" compressors stack up compared to the original Sanden unit? Seems that every time I try to buy a Sanden unit that it turns out to be "Sanden Style". I don't want to wind up with a Chinese replica that won't hold up.
Any help would be appreciated. Als, if anyone knows of the best price it would be helpful.

Thanks, Ed

If you want a Sanden, then buy from Vintage Air or Hot Rod Air. They have a reputation, and I'm sure they aren't gonna waste their reputation on that.

Keith...