Well, it depends on what you like. Corbin Fisher essentially took the homoerotic soft-core 'spornography' of A&F catalogs to the next level. If traditionally good-looking, 'collegiate' athletes are your thing, than Corbin Fisher will offer you a decade's worth of hot guys having gay sex. And as with Abercrombie catalogs, if you're looking for ethnic and racial diversity you'll find its slim pickin's.
The
Sean Cody models seem to be a little older (though they too offer a healthy serving of chicken), less 'collegiate', more surfer/body builder types. They too aren't big on diversity. Perhaps its because they're older, but my sense is that the
Sean Cody models are a little more open about their 'bi-curious' or 'sexually flexible' natures.
While there's a lot of justified criticism of their actually shooting techniques (too many dick and butt close-ups, etc.), in general I still think Corbin Fisher does a better job at filming sex than most of their competitors since they really strive to make the scene seem one-take real-time. The scenes are definitely blocked, but they're more fluid. By contrast on
Sean Cody you get these, for want of a better term, 'snapshots', i.e. two minutes in one position (cut) two in another. This sucks if you find yourself getting into on position, only to have it change abruptly. It doesn't seem like real sex.
The other plus or minus for Corbin Fisher is that they use the same models, often over a period of several years. If you form attachments to models, like watching them evolve and even grow-up then CF if great. Kellan for example, who seems to have become their most reliable 'go-to' model in the past few years, has been in over 60 scenes and Quinn, one of the few openly gay models on any of these sites, almost as many.
Sean Cody is increasingly coming to rely on 'frequent flyers', too, but still not to the same extent as CF.