My friend had used Pocket Protein when he had his operation 2 years ago and LOVED it!! It was the only thing concentrated enough to meet his protein goals. Their store was sold out for awhile but I found it at:
www.theproteinsale.com
It tastes amazing and is only 2 ounces so I can drink it without feeling bloated. I highly suggest trying it to anyone who is having troubles with their protein options!! I tried Isopure as well and liked it but had troubles mixing it at the office or on the run. I hope this helps you like it did me!!! :)