3/4 are near identical image quality wise. Same sensor just software difference'sI guess like many things, you only notice the ones that use them obnoxiously. I have to admit, as a relatively new drone user, one of the main things that holds me back most using it more often is not wanting to p*** others off. We've probably all been somewhere pretty that is ruined by the presence of an angry electric wasp flying about the place.
That said, as a photography tool, in the right environment (i.e. giving proper consideration to others) they can be fantastic. Opens up a whole new world of composition. I dipped my toe in at the cheaper end of the market (sub £300), buying a used DJI mini 2 fly more kit. Still images are surprisingly impressive to be honest! I suspect they'd fall apart in poor light but so far I've been really pleasantly surprised. I might ultimately upgrade to a mini pro 4 or 5 if I find I'm continuing to use it a lot. Quite a bit more money so I'm on the fence. Main appeal is the larger sensors, portrait orientation option, obstacle avoidance, object tracking (for video) and the option of the controller with integrated screen so less faff to get up flying. But, I would still suggest a Mini 2 is a really good starting point if you're not sure how big a hobby this will become. I know a lot of people who have bought a drone, used it a lot for a few weeks and then it's not seen the light of day again after.
The 5 seems to be a jump up in quality