@sharkNserg My experience so far is that Joylent powder (now called "Jimmy Joy", I still hate the name) is a very good option from both a cost and nutrition perspective, although the flavours are a bit bland. I've found Queal powder to have very nice flavours, but it's more expensive. Leaving it in the fridge overnight, prepared, makes both a lot nicer.

The 'hot pots' from Jimmy Joy (not technically a drink) are also very good, but unfortunately very pricey.

I've tried pre-made drinks from Saturo and Jimmy Joy, and hated both. Felt greasy and uncomfortable to drink.