I am thinking about what we remember today from 300 years ago (1723) about popular performers, fiction, foods, athletes, and communication methods. What came to mind was quill pens. So I vote for iphones.
(Admittedly, I was too lazy to think about which authors or composers are from that era, some of whom are probably well known to me.)
@DrWatson J. S. Bach was alive and active at that time. I believe he died in 1750. He and his music will be remembered for many centuries to come, perhaps thousands of years. In fact, his music recordings were inscribed onto the historical disk attached to the Voyager 1 Space Probe, which left our Solar System decades ago. It is now in Interstellar Space, so it may, ultimately, outlive not only our civilization, but life on Earth and our planet itself. It could be conceivably be found and played by an alien civilization millions if not billions of yrs hence !