I’ve tried Soylent, Huel, and Jimmy Joy. Each has their own advantages and disadvantages. Soylent has a very smooth texture but not too many flavors, Huel and JJ have great flavor variety but a more grainy texture. Huel (and I think JJ now too) have hot meals which are pretty good and a nice change of pace from cold drinks.
I use them partly for convenience and partly because they have a good amount of fiber which I sometimes don’t get enough of. I don’t really have the self discipline or the willingness to eat the same thing 3x/day in order to put exactly X number of calories in me so I can lose weight.