I have been to both only just once but I must say that the Primetime blew away Sci-Fi in Food, Service and Atomosphere. The Sci-Fi is cool for the first 10-15 Min but then gets old and stale really fast. Couldn't they at least have enough movies clips not to replay them 4 or 5 times during one seating? This coming from someone who loves corny movies like that. Primetime was fun and the servers seemed more "into it" that at Sci-Fi. If I had to choose between the two, I have no doubts that I would go to the Primetime again and never go back to Sci-Fi, the food really was substandard, and I like bugers and such.