HHB Circle 5's (I've said it before and I'll say it again)
They are fantastic for techno production and such like. I bought mine new years ago. I have heard everything, and used most ,and nothing can touch the Circle 5s. I demo'd all the new stuff from 2003,2004 and still nothing comes close.
I feel they are a forgotten classics, people either ignored them or have never heard of them! Occasionally you see a 2nd hand pair for around £250-300 on www.soundonsound.co.uk which is basically a F***IN bargain.
If you are serious about techno production you would not replace these for anything.
PS you dont need the active ones just get a samson servo...