Trial offer: Pay $3.95 for a three-day membership when you join VideosZ. Rental fees: $29.95 per month for unlimited streaming and/or downloads from VideosZ adult movie library, $59.95 for three months or $99.95 for six months. Your membership will automatically renew each month until you cancel. The site adds three to five new titles per day. It offers members low-quality previews of each title. Relative size of selection: 3 of 4 stars. Technical requirements: PC or Mac with Windows Media Player 9 or PC with DiVX player. Credit cards accepted: Visa, Mastercard, Discover (billed as IBillCS or Paycom). You also can pay by online check or phone. Privacy policy: Does not share customer information with third parties. Customer service: Email.

Best Adult VOD Site?: The most popular VOD service in our guide is Hot Movies, which has tens of thousands of adult titles. You can buy access by the minute (at 8.7 cents and up) or purchase unlimited viewing of any individual title for two, seven or 30 days. Our most popular flat-rate site is Video Box, which charges $9.95 per month for unlimited downloads from its library of more than 8,000 movies.

Prefer to Rent DVDs?: If you prefer to rent DVDs rather than download movies, compare online services at our Adult DVD Rental Guide. Most charge $10 to $30 per month to have one to three adult DVDs out at a time, with no late fees or return dates. A few rent individual DVDs for $3 to $5 each per week. A credit card is required to join any DVD rental service.