I would stay away from soy protein and opt for an alkaline-forming protein rather than an acid-forming protein (like soy, and of course whey, casein, etc.)
If you can get your hands on a hemp, pea, rice, or even spirulina protein, I think those would be best.
Soy is acid-forming and vegans especially tend to eat so much soy anyway for breakfast, snacks, lunch, dinner, desserts, bars, etc. I would opt for something else.
Isolate proteins aren't the healthiest either, so I'd go for a whole protein, sprouted protein, etc.
Some products you might like are:
Bodybuilding.com should carry all that stuff, but for a quick collection of a bunch of all-vegan proteins check out www.veganproteins.com
Then pick items up anywhere you can, online, in stores, etc.
My all-time favorite is Vega Sport Protein Vanilla Flavor, which also has BCAAs and l-glutamine. It's awesome! Plant Fusion is also really good and a nice low price point. The others mentioned are all pretty good too, both in quality and flavors.
All the best!
Great to have you here.