We have a massive Techno/Trance scene here, you need to be here to find the good nights out though. Alot of the younger DJ's really are rubbish and I am unsure how they make a living from it. Venues change all the time depending on who has the nigth so you can't rely on the clubs to keep a good standard either.
Best thing to do is have a walk around town and you will see posters all over the place, eventually you will notice something you know is good. We have guest DJ's from all over the world, if you find the underground scene then you will find the better venues.