Apologies if i'm not posting in the correct location; i'm new to FT and just figuring it all out.

I'm flying to BOM in a few weeks on AI. (ORD-JFK-BOM) (BOM-FRA-ORD) AI was not my first choice, but it looks like my outbound might be a newer plane, however, its not clear B777 (777).
The return is odd. Equipment is listed as B767-300ER (77W), but i can't find more information on this plane.

Any reviews on any of these flights? or these planes from AI?

Much appreciated!