The style was very cool. The nods to Body Double, American Gigolo, St Elmos Fire, Dario Argento type movies.
What strikes me about Ti West's horror movies is there is no real suspense, outside of a few scenes. He doesn't build tension. He doesn't have that Wes Craven/Argento ability, or not yet. Because large portions of the are pretty flat. There's an absurd scene where Maxxine doesn't tell the director three of her friends were murdered in 24 hours or whatever.
The characters are all stock. We never get the sense they are real people. Maybe that's on purpose. The writing, also weak. It's not funny and it's not sharp, it just moves the scenes along, mostly. Ti West as a lot of talent for visual style and music, the montages were the strongest part. The meta Pyscho sequence was ok, but again, a lot of build up for a pretty flat scene with Kevin Bacon running around.
X left almost no impression on me. This left more. But, it needed tightening. The slasher bit needs to be more of a mystery. But, the black gloves and kills are pure Argento. Right out of Deep Red, and all those other ones. The one with the models in the house. edit Mario Bava one. Black Moonlight and Lace or whatever.