Interesting: I tried to apply to QualityText.net and kept getting an error when submitting the writing sample. I never had a response from their support team. Did you manage to submit yours?

Zerys is pretty good, although in the last few weeks they've introduced a requirement for writers to have calls with new clients. I'm not interested in doing that, so I haven't worked there much recently. I'm hoping they're going to drop the requirement soon.

I'd advise signing up for Constant Content and Content Gather. Upload a few articles (on whatever topics you like) onto both, and then start applying for casting calls and writer pools on Constant Content and for Elite status on Content Gather. In my experience, that's how you get well-paid work.

I also like Writer's Domain but I don't think they're hiring might now. You might want to get onto the waiting list, as their articles are very easy to write.

Textbroker (or the European version) is a very standard content mill. Not the best rates, but a good standby option.