Opinions on the Mini line

Currently flying the mini pro3. Absolutely love it and found it a huge improvement from the 2, my question is for those of you who have the mini pro 4 that have also flown older versions. Was the 4 worth the purchase ? Was it actually THAT much better than the 3? I run a single man drone service in my home town and am probably going to be upgrading to the 5 when it releases. Unless I feel like DJI is just re releasing old prudcts in new skins. I live in Canada btw. So as far as I'm aware, we aren't at odds with Asia and DJI so I don't think I would be affected by American product bans.

Open to all discussion about it. This is purely personal research

TIA