How they compare
Both are named for the casting couch, but they look nothing alike.
Backroom Casting Couch made the audition format famous: newcomers under first names, a long interview and an audition that goes further than they expected. It has about 970 scenes since 2014, mostly 60 to 75 minutes, a new one every Monday, and includes Exploited College Girls. It's $29.80 a month or $199.99 a year with a $1 two-day trial.
Casting Couch X, from Porn Pros, is the glossy version: good lighting, 1080p, a candid interview and newcomers who often became well known. It has 261 videos of about 40 to 45 minutes, with about one new a month. It's $119.40 a year or $29.95 a month, and a Porn Pros membership adds about 20 sister sites.