BAS vs Sirupati?
probably weight distribution in the hand would be most conspicuous, but the profiles are (as you've seen) markedly different. One format might appeal to a person based solely on that person's sense of what it "should" look like.
Functionality would be next on my list...the BAS is more utilitarian, the Siru more dedicated of a weapon, IMO.
I have Bura, Shankar, and Amtrak...blades... Each is a marvelous tool. The quality control at HI is so rigorous, I can't imagine a bad product getting through.
Enjoy.