SD Cards are just so damn cheap. Less than $20 USD for a 128GB microsd is unbelievable (cost and size). Only the most premium of the premium have a chance of su

SD Cards are just so damn cheap. Less than $20 USD for a 128GB microsd is unbelievable (cost and size). Only the most premium of the premium have a chance of surviving significant random or small writes, it seems. "Ultra" isn't quite enough, we need "Extreme Pro"? (Needing to figure out the ranking of superlatives is silly.) There's "Max Endurance" or "Pro Endurance" now, sounds promising ... but those are barely any more expensive, so I'm not sure how much different they could be ... You can get Swissbit pSLC (pseudo-SLC) SD cards from component distributers like Mouser and Digikey, and they are much more expensive, but should be "industrial grade". I've recently purchased a couple of their 8GB microsd cards for about $30 each (but haven't put them through a lot of real usage yet ...)