If you're looking for sound quality then the first thing you should do is to quit the idea of having a wireless set.
And if you're spending less than 80 EU (rule of thumb for me) it matters little what you get from any of the established brands. Stay away from Bose if you're not spending 150 eu though. The CX-300 precision from Sennheiser are my go to headphones for everyday use in public transport, the gym, bike rides etc; they're cheap have the best sound you can get for that range and they last about a year or so for me.