Not sure about USAlternator cause they don't seem to be well known.For that kind of money i'd go with a tried and tested company.That's just my opinion of course.Good luck.This is an email i received from them(USAlternators):We have been in business officially since May with a website and everything. But the company we are working with to get parts and engineer new designs has been in business since the 1920s. That is why we are able to get new Denso OEM parts. So we are new since you have not heard of us. But we have been testing our alts on friends vehicles and my personal vehicle for a year now to make sure they can sustain output and take abuse.