GNC Wheybolic?

Does anyone use this protein?
I went to GNC and they had samples of the chocolate mixed with water and it was pretty good.
My Surgeons paper work said to avoid hydrolyzed collegen protein, this one has whey isolate and hydrolyzed whey. Is this the correct type of whey?

 I use the Strawberry one, and  wasn't aware of the hydrolyzed collagen not being ok. I have been taking it for days and have continued to lose. I am curious why it is to be avoided and would like to hear any input on it as well. Sorry just more questions than answers.

 I checked with my NUT approved list of proteins and the one I use GNC pro performance is a-ok and the wheybolic is ok too. There was no collagen in either one. 

Yea I double checked also. the hydrolyzed collegen and  hydrolyzed whey are two diffrent things. Good because I actually like the taste of this one.
I tried the chocolate and I bought a shaker bottle and no clumps and it mixed real easy. I do 2 scoops in 12 ounces of water and it was good. I know some people have problems changing from thick protein to something thinner after so for now I am going to keep mixing with water to make that easy.
I also bought the fruit punch (they were on sale 2 for 90) I haven't tried it yet but when I do I will let you know what I think.
Have you tried any other flavors?