I will always happily take AW tokens, as 1 token = 1 pound, and it's quite transparent that they take a 30% cut, so i know how much i'm REALLY earning!
AdultWork uses various methods to pay out credits, including check to the US. Payments are generally 2 weeks out from the first time you have enough credit to cash out. Once you get in a regular cycle, you are getting paid weekly. I've opted to be paid by check for many years with the site. With only minor issues with a check arriving late or not at all in all that time. They always handle it quickly and efficiently.