I have an Air 2. Bought it when they came out. For the extra couple of hundred I would buy the 2S now. Don't bother with the Mini. A mate has one and it is next to useless if there is any sort of breeze/wind. The thing is just too light and small and just won't sit in the same spot and just get blown around where are my Air 2 is just solid, even in a fair bit of wind.
I got the refresh and used it once due to taking out a branch I didn't see after a moment on inattention and it did a happy dance on the ground. Ripped off the gimbal, 1 leg and lots of scratches. When you send it in for the refresh, you can opt to get a free quote and just pay that if the repair is cheaper than getting a new one under refresh and my repair came to about $500. Got a new one for $149 so already ahead. Also crashed it on a beach doing a tracking shot of my car in a fair bit of wind and 1 of the legs folded in slightly I think due to the wind speed (was gusting 40kmh on the bom ap), putting the drone out of balance and sending it on a 45 degree angle at full power due to it trying to correct itself into a sand dune. Lucky to get out of that one due to it only being about 10m above the dune at the time so not having a great distance but got a heap of sand through it due to the happy dance in the sand.
I tell people, only buy one if you are in a good enough financial position to lose it completely never to return and not be too bummed about it. They do have software fly away problems, birds love to chase them and knock them out of the sky, they don't float so will sink straight away if knocked out of the sky over water, get stuck high up trees easily, batteries can become dislodged, can get out of balance due to a leg moving/propellor coming loose and you can be far enough away to not be able to ever get it should something happen (think vic high country where even being 200m away from a ridgeline would be no chance of walking to get it.
But I love mine. I don't do a lot with the footage but take it on all my trips. Actually use it probably 90% for photos. Just gives me something to do plus you can have some really good looks around at things that you would never be able to walk close enough to.
Gives you a chance to take some cool quick shots like this that show off a bit more than a photo can