After searching amazon.de/es I found a few headphones which would be a nice upgrade from your Sony MDR V55. As far as audio quality goes nothing in this price range will come close to the same quality you get from a wired connection.
Brainwavz HM5- Build quality is top notch. They use two big, pleather pads on each earcup, and are extremely comfortable. Passive noise isolation is also good. They use two removable cables and are built to last.They have a neutral, detailed, sound signature but also respond well to an equalizer and are bass capable. Nice wide soundstage for a closed back pair of headphones. They are also 90 euro on amazon.es.
AIAIAI TMA-1- This pair is portable and closed back. They have a nice engaging sound with a full, lush midrange, fast and punchy bass, and smooth laid back highs. Isolation is average as well as the soundstage. It has a neutral sound signature as these were designed for DJ use, but they respond excellent to an equalizer. Build quality is decent. Currently 90 euro on amazon.de.
Logitech UE 6000- They have a fun v shaped sound signature which would work great for EDM. Slightly warm sounding headphones with good emphasis on sub bass. Bass impact is good and has great extension. Good isolation with average build quality and comfort. They fold up and work for portable use as well. Currently 63 euro on amazon.de.
Philips SHP9500- These would make for a good venture into open back headphones. Note since they are open back sound leakage will be an issue, and would be best used in an isolated environment. Also common to many open back headphones they lack bass impact compared to closed back, but make up for it with quality instead of quantity. Sound signature is bright and detailed. Its aesthetics are quite nice imo, the huge L and R on each side can be blacked out easily. They are also comfortable and have cloth earpads and padding. Currently 45 euro on amazon.de.
Creative Aurvana Live!- Closed back pair with a nice balanced yet slightly warm sound signature. Bass extension is great and can dig deep, mids are smooth and natural, highs are pronounced but not fatiguing or overbearing. Build and noise isolation is poor, and these would not hold up well if they are going to be thrown around as a pair of portable headphones. Comfort is decent as they use foam padded pleather ear pads and are lightweight. FWIW they are on tyll's Wall of Fame over at inner fidelity. Currently 55 euro on amazon.es.