When your first access Sex3 it makes a damn nice change from having adverts everywhere. On the homepage, the only adverts you'll see are right at the bottom so they are easy to avoid. It gives your eyes a rest when you're trying to find something to wank over.
You can watch the movies for free, straight away without joining, however that's an option if you want to save your favourites for later when the wife is out. If you can't jack off here, you're gonna struggle anywhere - with over 35k hardcore movies alone and a shit load of categories.
If you're a porn connoisseur like ThePornDude and you know what producers you like, you can access the Channels section and get straight into all content from the likes of Reality Kings or Private. The only main downside to this site is there are some really short clips of like a minute. A couple of strokes and it will be over before you've got anywhere.