I'm the Metamucil post child (just kidding).... but as Fruitgirl points out, we all respond differently. If you started the psyllium, it might be best to do so gradually.
My son's GI also recommends Benefiber.
I clip coupons and shop sales for Metamucil....
I tried the Walmart Equate brand of the capsules once and they did not work as well as the Metamucil capsules for me. I thought maybe the capsule coating was less soluble or something. I was on vacation and flaring.... and they almost made me worse. So since then I've stuck to my brand under "if it ain't broke, don't fix it" rule!
I take two heaping spoon per day, mixed with plenty of water and chased by more water.