Equate Children's liquid acetaminophen

I have 6 year old boy/girl twins.They have on many occassions needed a pain reliever to help take away the aches and pains they come across including ear infections, immunization shots, cuts and falls.I used the more expensive brand of Tylenol until a friend of mine told me about the generic you could get at Wal-Mart that worked just as well.I bought this brand in the grape flavor.My kids seem to take it pretty well and do not mind the taste of grape although its not their favorite.They will take this, but prefer the berry flavored ibuprofen, equate also makes.I like to alternate between the two so that the ibupprofen is not so hard on their little stomachs and the acetminophen is not so hard on their livers.