Chances are you won't get diddly from any of them. Lawyers tend to structure the class actions to give you a nickel a share or something, while they rake in millions...and those millions come from the company, which further devalues your shares.
People need to wise up. I've been a party to probably a half dozen class action suits over the years, usually by coincidence and not because I had any gripe with a particular company. Biggest (and only) award that ever reached me was a sprint phone card valued at $25 but that used up it's value at something like 79 sents a minute. In short, a joke.
My advice. Learn your lessons but don't waste your time. Class actions are not likely to fix the problem you're facing.