I usually get my protein at GNC... but after yesterday I think I am horribly annoyed... or thankful.
 
I first started with Ultimate Nutrition ISO93 cause I was told isolated is the best...
 
Then I switched to the GNC Isolate...
 
Last night I wanted something different... so the guy tells me that isolates are only good if you are thinking of competing and that it would be best to get something different and cheaper - he suggested 100% ON Whey Gold Standard
 
He said that he wasn't worried about the extra commission the more expensive product would give him. That he would rather have a happy repeat customer.
 
Could someone please clarify that he wasn't just bullcrapping me... does it REALLY matter which one I use?
 
Thanks!

Isolate is the fastest digested, but Whey Protein overall is a fast digesting protein. I don't think it's that big of a deal, unless you have the extra cash to drop on Isolate. Isolate is also good for people that suffer from Lactose Intolerance.

Studies show that post workout its better to have whey concentrate than isolate. It was in Men's Health not to long ago.

99.9 % of people will not see a diffrence in results bewtween wpi\wpc.  Where people will see a diffrence if they have problems with lactose and then they should get wpi as wpc will make you gassy.  Just a note WPH is the "fastest" whey but also the most expensive.  

WPI will not really give you the sh!ts, WPC will.

As far as I have seen, the Isolate has the lactose removed from it to ease digestion in those that have problems digesting it, if you have any lactose intolerance you will get gas and perhaps the runs from regular whey.

Thanks for the responses...
 
I guess that means that although their logic was correct, the previous sales reps were more interested in their commission as opposed to being completely honest...
 
I hate living in a city where there really are not too many options for supplementation stores.... grrrrrrrrrrrrrrrrr