I've tried Joylent and Huel. Soylent 1.5 is still my favorite. Probably a similar diy recipe I could try. Speaking of DIY Soylent, I wonder if this new company will still be into that.
Every revision of Soylent made it more unpleasant for me (but better for my wife). They seemed to optimize mouth-feel over taste, and it was undrinkable for me somewhere around 1.5
Their goal was to make it as bland as possible for a while under the premise that if it had any flavor, you'd get tired of it. Though the 1.0 was pretty fishy - in the sense it tasted of fish, not suspicious.
Fish oil additive will do that.
Those were the days.
I enjoyed both 1.2 and 1.3, not sure what it tastes like now but heard the shelf life has dropped due to the changes.