For Sheffield, you're not going to find anything better for a while. Climax is sometimes on each month, sometimes it just randomly stops.. the day of the month seems to change a lot too so you need to keep up to date with it sometimes.. It's best when it's at the Sheff Union, it's a large venue (for what it is) and there's usually a decent sized crowd there. The music is good, theres different rooms, 3 bars and lots of toilets so not much queuing for them! I've always had a good time here.