SAM destroys Ruger, Remington, Taurus... the list goes on and on. You're getting a custom fitted, almost custom built 1911 for a fraction of the "off the production line" 1911's.
I'd go far as to put a SAM, especially their Thunderbolt model, way above anything Colt or Wilson Combat would make.
They are made by people who have been making guns their ENTIRE lives. And in addition to their craftsmanship abilities, they regularly knock-off and replicate much higher end 1911's for their own "illegal" market. If you're a master at making guns of a higher quality, then it's a no brainier that their standard 1911's are top of the line in fit and function.
The bottom line is, there is no one making 1911's in the states that can say that they've been making that same model their entire lives, so it's for that reason alone is why anyone even considers a Filipino 1911, let alone that they have become renowned with shooters in the USA for their unbeatable value.