Watching an old '80s porn like this reminds me of just how poorly made the current generation of porn movies are.
In classic porn like Love Slaves, guys actually pay attention to their female partners so women have orgasms too. The men lasted as long as normal, human males last, and there was no choking, slapping, or spitting.
The plot in Love Slaves is engaging enough to keep your attention between the sex scenes. I actually wanted to find out if John's 'sister' was going to be OK.
If you are a 20 or even 30-something, you owe it to yourself and your s.o. to rent this movie so you can experience the golden age of adult movie making.
There is ONE concession I will give to newer porn flicks. After getting used to their beautifully shaved or trimmed vaginas, looking at the old shag carpets in this movie was a bit hard to take.