Hey poshbird. My advice would be don't get to caught up in the big brands that are far to over priced. There are decent suppliers that are cheap and equal quality. I would suggest to start out just get a nice simple whey, bulkpowders is top stuff and have used it for a while. Another company if you want to spend alittle more money would be performagen, very good company, really decent products, and they are about to release there problend protein soon, which is fantastic in taste and nutritional profile.
Anyway I hope this helps