Well, my thinking is that any of these sites can infect you at any time, no matter what precautions you take, and the only way to give yourself a safe 'backstop' is to have a pre-infection backup. Once you get it set up, it only takes a few minutes to do, and it could save you literally days of work rebuilding. Don't use either of the sites you mention (have heard of them both), but I think that there's a simple answer to any infection you may pick up.
I use www.cracks.am, which has a few popups, and some mature content, but as long as you reject any download installs you should be fine. They have tons of cracks and serials.
Many of these sites say that you have to install this or that, or vote for their site, or follow a link or whatever, but if you keep saying no, then you often get what you want anyway.
I take a backup every month, and before every warez install, and it's saved my butt on many occasions.