Your Absoulelty Right dude. Yes iam a Big Fan of Flankers, I was gone crazy on Sukhois when i first seen a Sukhoi-30MKI manaurvers in an Airshow conducted by Indian Airforce.
The Indian Version called Sukhoi-30MKI is considered to be the most advanced fighter aircraft of Russian origin in service, except for Su-35. he MKI variant is a much more advanced fighter jet than the basic Russian and Chinese K and MK variants and is considered a 4.5 Generation Aircraft.
Whereas when it comes to Su-37 it wont enter in service in any Airforce. It was a Prototype of the PAKFA.
Thanks a Lot for That
Thanks
Cheers,