Gaming Lagoon hardly credited me with anything. One of their offers was "just click on the link." I clicked on it, and they didn't approve me. I sent Dietzel Inc. an email that addressed their entire "common problems" list and how none of it applied to me, and I said that I should have 18 credits. Someone named Tom Dietzel, who I imagine is the owner, sent me a reply saying that I should "submit them all again."
I completed 16 offers in one day, and I was credited with 3. I did all of the offers again, and they canceled my account because I had already done them. Go figure.
So, in my opinion, you should definitely go with Prize Rebel.