L-glutamine VS the Rest (acetyl, etc) HYPE??

[roadapple]

Are the "new" glutamines really better than straight old L-glautamine or is it all hype? 90% + of the studies on glutamine as an anabolic or at least cell-volumizing agent are on the good ol' L-glutamine...

Is the new glutamines just hype? or should I invest the extra?

[Garnelek]

I believe its the same issue like mono and Creatine Ethyl Ester!I like better what has been around the longest!However i am not sure if new versions aren't better than old ones.