I went to EFS last Friday for the first time and we were on guestlist which meant free admission before 11 pm otherwise it would have been $15 or $20. We checked our coats ($3 for each coat). The club is quite nice but really small and it's more like a lounge with a small dance floor. It's true that some of the staff acted with some pretentiousness.
Crowd: The crowd for a Friday was mixed and the average age for that particular night was probably 25 years old and I'm pretty sure Friday is 21+. Decent ratio of males to females.
Drinks: We ordered MGD beer for most of the night which was $8 which is only slightly higher than most clubs since it's priced as an imported beer.
Music: The music from what I remember was Top 40, House and Hip Hop. The DJ was pretty good and he had the crowd moving on and off the dance floor.
Overall, it had a good vibe, it's a decent place to party although it's quite small. Some of the other comments made by other Yelpers are true that drinks are slightly priced higher but keep in mind it's King St West and some of the staff are not too friendly but at the same time when I go out, I don't go out for the staff but it can make a difference in your party experience.