I am using RockPis because they are reasonably fast hexacores that don't threaten my environment in terms of viruses. If hubby manages to load a virus onto it, the card is formatted and he is back online in about 20 minutes.
I learned that lesson when I gave him my notebook to do his stuff and he returned it with 14 viruses and trojans.
Reinstallation of these SBCs is fast and relatively painless.
If they break, well, just grab a new one. No install hassles, no virus hassles, no activation hassles or similar nastinesses.
I also use the STM32F427 dev kit as embedded driver for LED displays in pinball machines. Works like a charm.
At 15€ - 35€ for an entry level Rapsbi or compatible I do see some legitimate use.
@Zucca if you cannot find one for that kind of money, you can get one when you come visit me.I still have a couple of spares in my rapsbi bin.