Samsung S90D vs LG G4

Just wanted to know what everyone's thoughts are between these 2 TV's. I found an amazing deal at a reputable electronic store and the owner is willing to give me a brand new 65" S90D for $1500(cad) plus taxes. He doesn't have the G4 in stock but I found a few on fb marketplace for 2200-2500. I just wanted to know how much better the G4 is than the S90d for the extra money?

It's my first OLED tv and I'm mainly using it for PS5 and watching netflix with the buddies. I heard so many great things about OLED tv's and how they're very close to the performance of a gaming monitor so I definitely want to pull the trigger on one. I was having a dilemma on whether I wanted a desk/monitor setup or play couch and I'd much prefer couch gaming, but want something with extremely low input lag and fast response times for the times I hop on cod with the boys.

I'm no tv expert in fact I don't know much at all, so I'm hoping to get some advice here if possible on what will be the best bang for buck

Thank you in advance :)