Last couple upgrades was iPhone 7 -> 11 Pro -> 15 Pro. Each brought me something significant (FaceID, 120hz screen, magsafe, wireless charging, etc) along with a nice speed boost. I feel like the sweet spot for upgrading is 3-4 generations.

I dunno maybe it’s just gimmicky but it feels so nice to have a desktop app over and webui that still uses the server. I use Deluge for only that reason