I don't think anyone even mentioned the king, Bitcoin. It is definitely one of my favorite for the simple fact that it is pretty easy and straightforward to use. There aren't a lot of options so point and click works pretty well. While the fees aren't great, they're certainly not in Ethereums ballpark, and you really don't need to transact on the chain very much since it's mostly just buy and HODL. Works pretty well for that for me.
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