Is Qi2 or Qi2.2 worth paying extra for?

If you carry a recent iPhone (15 series or newer) or a Qi2-capable Android, yes — Qi2 unlocks 15W magnetic charging and Qi2.2 pushes that to 25W with proper alignment. Reviewers at AppleInsider and Wired note Qi2.2 pads reach 50% charge in roughly 22–30 minutes on iPhone 17 Pro, which is meaningfully faster than legacy 7.5W Qi pads. Older phones won't benefit, so a sub-$20 Qi pad is fine if you don't have a Qi2 device.