Hey Babyramone,
What date is it?
There are loads of good nights on in Edinburgh in April:
Friday 6th
TokyoBlu @ Ego (really good house night - TokyoBlu are amazing DJs)
Trouble @
Cabaret Voltaire (Mixed House, 6 or 7 DJ's on. Great venue)
Saturday 7th
Sofistifunk @ City (Crap Venue! But more mainstream house. Kate Lawler DJing)
Parliament @ The Caves (Amazing Funky/Electro house and breaks, prog, in fab venue)
Friday 13th (spooky..!)
Nuklearpuppy @ Ego (Hard, dirty house and trance, very 'clubby' crowd)
Solescience @ Cabaret Voltaire (Funky, minimal Techno and disco house. Prog. Better crowd)
Saturday 14th
Stereotype @ The Liquid Room (Club, House, Dance.. Really good night)
Diskokitten @ Berlin (More commercial, but still House)
Afterdark @ Cabaret Voltaire (Electro, Dirty, Funky house, Funky Techno, a bit of Disco)
Saturday 21st
Musika @ The Liquid Room (Funky, Jackin, Electro House. Quite soulful)
There are other options, if you want something more mainstream try places like Stereo, Mood, Lava and Ignite.. But to be honest i'd steer clear of those places as its a really chavvy crowd.
OR there are loads of new(ish!) 3am bars that are better if you want something more 'chilled' that have goos DJ's on, like Baraka, Opal Lounge, Shanghai, Red, Pivo etc..
Hope this is helpful - let me know where you decide, I am DJing at a couple of the nights above (not allowed to say which as its 'self-promotion'!!)