The jelly scrolling hardly affects anyone, and the OP5 is a much nicer device than the 3T. I wouldn't buy into the hysteria some tech sites are trying to create.
My problem is I tend to keep phones for a while, so if it does affect me it will be a huge issue for me. Importing the phone means I can't return it easily. 6GB RAM + 128GB storage is fine for me, so I'll stick to the 3T. Cheaper as well