My first iPad, I believe it was the third generation: I would have never used it if it were as slow as it has become today. It also lost some synchronization options, though I don’t recall what it was.

That being said: I kept my 2013 MacBook Pro retina until a few months ago, one year after a battery replacement which ended up breaking other parts and becoming to expensive to fix. Otherwise it ran perfectly fine and the high quality screen was almost on par to current screens.