ha ha, thank you all! mariposa is correct, and for what it is worth, I'll probably do Ezeiza taxi. Even if it's cheaper and plenty safe to take a street cab, I'll be so freaked out from the fact that I'm moving here that I'll just do the easiest option.
I've also read that taking the city bus to/from the airport is waaay cheap, but again, I'll do that in the future and not for my first arrival.
How's the weather in July? I'll be coming from the Pacific Northwest, and our winters it is frequently below 0, very wet, all around grey and gross. I realize I'm doing it backwards in moving to BA during winter, but c'est la vie.
Ciao!