Is Flor Essence the best brand ?

I got the Floressence brand first, and that did me some good I feel.
Then I was looking for a cheaper brand and I found Obijwa tea, but this was vastly different from Floressence, and I didn't like it so threw it away.

Now I am trying Mountain Rose Herbs brand. This is about the best bang-for-the-buck I think, but again, this is more gritty and muddy than the Flor Essence.

Is there a big difference between brands.
What is the best brand? Tweet