I like the Vanilla, it actually tastes like real vanilla bean and not fake chemicals. It also mixes well with other stuff like when making a smoothie. I will try the PB/choc next. FOr all the whey i've tried cinamin bun but did not like it. Their Vanilla is ok (not as good as allmax) but the bun has the flavor in an after taste. Also, even though they are both isolates it doesn't seem to work as fast as Allmax. I have also tried Gaspari and their chocolate reminds me of Ovaltine. I do not like their Vanilla though.
This is all I could find, not sure the exact differences ..."Although glutamine and glutamic acid have similar names, they are structurally different". Here's another result (can't post links, sorry) ..."Glutamine is the amino acid in its free-form, which means it's in its whole food state, whenever you eat foods such as almonds and peanuts your ingesting glutamine amino acids. L-Glutamine is basically the same thing. Its glutamine in its free-form (whole food). The majority of supplement companies sell L-glutamine and tout it as the best form, which it is not". Ok, from further reading it looks like Glutamic Acid is absorbed faster.