Just the heads up, my recollection is that NMI tested some Max's Superwhey a while back and found the protein content was seriously overstated.
I had a document with all the recent test results, but I'm not sure where I saved it. Think it was 60% rather than the 80% quoted.
Either way, now that I found Bulk Nutrients I haven't changed proteins in quite sometime.
Strawberry WPC is both cheap and delicious. I have a few other flavours but it remains my favourite.
Edit:
Just found my own results from when I sent stuff in. Not as recent as the other results but:
Max's Superwhey 64.3g rather than the quoted 79.2g
That's a fair discrepancy.