I was using meal replacement shakes for a while and at that time Soylent wasn't available in Canada, but it looks like it is now. I'd give that a try.
I found one powder out of Europe that I really liked but I can't seem to find the name. It tasted quite good.
The other one I used for a while was this one
https://superbodyfuel.com/
Taste was fine.
Ultimately I just started making my own food more, but I might get some Soylent to have quick meal options around.
EDIT: Hm Soylent doesn't seem to have much fiber.