CardiffDillon: You don't say if you're looking for straight or gay vids, but here's some suggestions: -
For straight vids: -
If you go to IAFD.com and search for Tony Duncan, you'll have a list of vids of him under his acting name of Mr 18". In reality, he's around 13" or so and rarely gets hard, but he has the biggest cock I've ever seen on video and is fascinating to watch.
You could also look there for vids starring Jack Napier (the self-styled biggest dick in porn, and allegedly 14" x 8"......although those are porn inches!). A good place to start for Jack's vids is biggestdickinporn.com He usually performs alongside Mandingo and Lexington Steele who are both hung huge too.
For gay vids: -
Look out for Joe Young who's made some vids for Falcon and others. Joe's a good 12" but also suffers from major wood problems. Joe only made 3 or 4 vids before retiring last year.
Steven A Love, a reputed 13"er is good in 'In Thrust We Trust'. To my knowledge, he made 6 or 7 other vids.
The late Buck 'Horse' Jackson, another alleged 13"er, shows himself off well in Black Justice. He made another 6 or so vids before his tragic death.
There's also Caio Amaral in 'Carnival In Rio' and Jadson Pirocao in 'Hot Times in Little Havana', both claiming 14" (again, take those stats with a large pinch of salt!, but big nevertheless)
I hope these few suggestion help you with your search
Dillon