I love and mostly prefer porn with plots.
Heres my top ten list (in no particular order)and I promise you wont go wrong with them.And they have proper plots.
1]Justine 2 Nothing to Hide:
Probably the best porn of all times, me thinks.Roxanne Blaze gives some performance.She is this wild child and her BF is a hopeless romantic.He goes away with work and she falls for a man and has an affair, who turns out to be the BF's father.Brilliant acting, story and amazing sex--esp all of Roxanne's scene.
2]Arabika
Almost all of Mario Salieri movies are brilliant and you will find quite a few in my list.In this movie a married, Sunny Mckay has a small fling with an Arab king and only gives him a BJ but no sex and he gets angry and kidnaps her.Her sister and her friend(Deborah Welles and Joy Karin) go to Middleeast to rescue her but themselves get caught and are done proper.All around again, brilliant acting, good story and a Twist in the END(yes a twist).
3]Private Afternoons of Pamela Mann.
Probably the most hilarious porn I have seen for a long time and its intellectually witty.Again has a twist in the end.The lesbian scene between Barbara Bourbon and Georgina Spelvin is crazy hot.
4]Private Teacher
Coming of age of a teen played by Tom Byron.Pervert neighbors, telescopes, hot aunt and a sex teacher(played by the goddess that is Kay Parker)..you ask and it has almost everything.The end scene where Tom does his aunt is the prefect climax to the movie.
5]Tarzan X-Shame of Jane -- also known as -- Jungle Heat .
Rocco Siffredi's finest film according to me.Rosa Caracciolo is the perfect hot Jane and look out for the character of Diana.Swetta Silvestru's scene in the stable is crazy.Again good story, good acting and a special mention must be made to the scene where Tarzan first finds Jane, unconscious, and gets confused seeing boobs and pussy on another person.That scene where she explains him everything and the consequent sex...its weirdly hot.
6]Mario Salieri's Sceneggiata Napoletana
Selen's finest film and she was a drop dead hottie.Great acting and good story and the fact that the first sex scene comes after 20 something minutes should tell you a lot.
7]The Taking of Christina.
You know the saying we use on crap main stream movies, "I have seen porn with better story-lines.".This is exactly 'THAT' Porn movie.
Apparently based on a true event that happened in California, where two robbers, who were going through a town, kidnapped a girl, raped her and then she somehow convinced them that she will be joining their group--takes them home and shoots them dead.The acting and storytelling will put mainstream movies to shame.Again no sex for the first 20 or so minutes with the efforts put on the story to explain characters, but the movie is brilliant.
8]Mario Salieri's Dracula
Mario Salieri's version of Dracula.Good story and good settings--kick ass sex.
9]Mario Salieri's Potere
The genius Mario's another brilliant movie about dirty politics and sex.
10]Amanda by Night.
I somehow fell in love with Veronica Hart after watching this movie.Great story about a hooker being bumped off and then a detective played by Robert Kerman investigates and uncovers the people responsible for it.Jamie Gilis, Samantha Fox and Ron Jeremy as usual give reliable performances but the the best thing about this movie is Veronica Hart.Not only does she looks adorable but she plays the part brilliantly.
If you are done by them...give other movies by Mario Salieri and his wife Nicky Ranieri a look.Few other mentions are Bad Girls, Vista Valley PTA, Sweet Sister(hilarious movie this --and its not incest), Adorable Lola etc.
Hope you have fun...I know you will.