Each to their own, and I do know of some Indian stators (SIL and/or aftermarket) that have served people well, however, I've just been donated another 2 dead Indian stators as a thanks for strobing a pal's new BGM replacement. In both cases, the LT coil of the Indian stators had failed (not even on revvy motors).

Thankfully, as a result of Indian LT coils failing so regularly, each of my bikes now has a repaired Indian stator as a spare

BGM stators might not be bullet-proof but most of my pals that do serious miles (Euro Lambrettas, etc.) have gone to BGM after repeated failures of the Indian stators. It should be noted that those that have repaired Indian stators with decent LT coils have had excellent service from them (every bit as good as BGM or Italian). Only in one case have I been asked to replace an Indian stator because of lighting failure, which turned out to be a lighting coil earthing out on the stator plate base, which in turn was fixed with a little TLC.
There are many perfectly good Indian stators out there but they would not be my first choice on a bike that I wanted to clock up a lot of miles on.
Adam
PS - I do know of people having the odd issue with BGM stators too... but these are far fewer by %