I've used both older and newer Sonos speakers, and there are definitely some noticeable differences. The newer models typically offer improved sound clarity and deeper bass compared to the older ones. Additionally, connectivity features acquire been enhanced in recent models; for example, many now support AirPlay 2 and have more stable WiFi connections. User experience is also smoother on the latest devices, with updates to the Sonos app making it easier to control settings and play music from various services. If you're considering an upgrade or a new purchase, I'd recommend going with the newer models for these improvements.