Low-end appliances or high-end 2nd hand?

If you are buying the second hand appliances from a reputable dealer with a guarantee then items like Liebherr will outlast the new budget ones. Smeg is over priced and not the best quality.

Your ip address suggests you are in Denmark? That being the case the product models will be different to the UK models.

Don

A pure buying gamble either way! You can pay through the nose on a brand new up market machine that lasts until the cost of repair does not become cost effective and that can actually happen very quickly i.e. just out of warranty! Or you can buy a new cheaper appliance and they can last 12 years or longer it depends on what the make the machine is and, above all, it is based on pure luck.
Buying up-market secondhand machines can net you the worlds greatest bargain of 2021 ( least in UK ) for not that much money ( new or newish but secondhand appliances that for whatever reason that become suddenly on the secondhand market sell at a small fraction of their original purchase cost though I do know that is not always the case in some countries, maybe yours but I would not know although I do know that repair costs especially abroad can be very high compared to UK ( which are themselves high enough as it is! ) or on the other hand you could end up paying over the odds and buying a second hand citrus special that is going to cost big money to repair with no come back what-so-ever. Impossible question to really answer irrespective of what brand the machine/s happen to be.

Sounds like a fair compromise. Best of luck.
As a future note on old appliances because I used to deal with stuff from the early 1980s: spares can be obsolete, or go obsolete the next day. Spares that are not obsolete can be very pricey. Never ever be under the illusion that because a machine is old, and so that there are now going to be few about, the spares are going to be reasonable, that is seldom the case. Part supply companies would rather raise the cost of those few spares so no one buys them then wright the stock off at end of year accounts whilst blowing their trumpet as to how Green they are rather than clearing out the old stock at a very sensible price until all the stock is at last sold AND then they are then now obsolete. How do I know well I used to work for a very famous appliance company who used to do just that. Mind you they were run by a bunch if Di*ks that I would not have put in charge of a village fete ice cream scoop never mind a company!