My favourites are Saucony, Adidas or Hoka. Adidas I would shy away from recommending to other people though as I've had some amazing shoes from them and some fucking terrible shoes so it is some what hit and miss. For me Saucony are always on point but always tend to be harder to find a good deal.
I usually trawl eBay and a few different websites looking for current stock they are trying to move and often end up with different shoes every time because of this, although j don't mind that too much. I have size 12 feet which usually narrows down my choices anyway but I'd say I average around £40 - £45 sort of area for shoes. Sometimes I'll have to buy slightly more expensive. I got some Saucony once that were second hand and worn for about 50km for £15 and they lasted a good 800km.
I mean, the 6a still has 3 years of support left so whilst it is older it is hardly at the end of its supported life.
Not everyone can change a battery in a phone, I can but I would still rather not do it on a phone that isn't really anything special and whilst yes they could feasibly last that long I think in practical everyday use application by the time you are getting to three years of daily use it will be beaten up and physically not in great shape any more for your average user.