Thank you for your thoughtful question.
You mentioned that you are happy with your current phone. You’ve stumbled upon a common misconception held by many otherwise dutiful consumers.
Happiness is not a binary system. It exists along a quantifiable scale, much like tornado strength, chili pepper heat, and physical beauty. While more research is required on the subject, scientists theorize that the happiness range runs from 1 to 794 (or 1 to 517.5 when converted to metric measurements). Your positive feelings toward your current phone sit somewhere along that spectrum.
Therefore, what you are really asking is: “Could I be happier?” If there is a new phone available, the answer is an unambiguous “yes.”
You mention attempting to conduct your own research on the newest devices. While I admire you taking initiative, I fear it is pointless. Are you a software developer? A hardware engineer? A UX designer? No? Then how could you possibly know what you want out of a telephone?