"Whey protein powder, maybe?. I know nothing about it. There is a lot of bogus/fake hype about it, so I would avoid it unless you have tested it."
I recommend Lyle McDonald's "The Protein Book" if you want to learn a *lot* about protein.
http://www.bodyrecomposition.com/the-protein-book
He also has a series of free articles on protein sources. Links to each here:
http://forums.lylemcdonald.com/showthread.php?t=1736
I'm personally not too keen on soy protein. There are way better protein sources that don't interfere with thyroid and other hormones at high levels of consumption. Hemp for example, appears to be a better alternative for vegans and vegetarians.
I've used Jarrow unflavored whey before. It's good quality stuff, if a little expensive. I now use truenutrition.com – high quality, low prices, low hype, and you can create custom mixes using just about anything.
I'd also recommend you consider a whey/casein blend instead of straight whey. The anabolic and anti-catabolic effects of the combination exceeds either in isolation. For reference, cow milk is 80% casein while human breast milk is 20-40%.