Yeah, Isopure is pretty damn good. Main quality you need to look for is whey isolate in a protein product.
I personally like Kaizen's 5 lb Chocolate as well as Scivation's 10 lb Chocolate Whey Proteins. You'd probably have to go on bodybuilding.com to order those because most local/regional supplement stores don't carry those products.
And I've never heard of any of those products listed in that link, Nate.
I usually mix cookies n cream Syntha 6 w/ sugar free lowfat choc. milk and it's great. Your local GNC will carry the 3 I listed. Also check out www.DPSnutrition.com I have ordered from them and they are good about prices and shipping.