tried 3 different probiotic formulations - thoughts

researching probiotics is a rabbit hole. i rotated through 3 different multi-strain ones for 6 weeks each. A (15 strain, refrigerated): felt slight improvement in stool consistency by wk 4 B (single strain, shelf stable): nothing noticeable C (spore based): weirdly better energy, gut unchanged conclusion: i have no idea, possibly placebo. looking at Seed vs Ritual vs some generic from my pharmacy for my next round. anyone done a real side by side?