Trial offer: Receive 15 minutes free when you create an account at X on Demand. Rental fees: $3.95 for 15 minutes, $5.95 for 30 minutes, $8.95 for 60 minutes, $10.95 for 90 minutes, $13.95 for 120 minutes, $19.95 for 200 minutes (plus 10 minutes bonus), $24.95 for 250 minutes (plus 20 minutes bonus), $29.95 for 300 minutes, $49.95 for 500 minutes, $69.95 for 750 minutes or $84.95 for 1,000 minutes. Relative size of selection: 3 of 4 stars. Technical requirements: Windows Media Player or Real Player. Credit cards accepted: Visa, Mastercard, Discover, American Express (billed as XOD or Paycom). Privacy policy: Does not share customer information with third parties. Customer service: 800-347-8884 or email via site.

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.