I recently owned a pair of Sony MDR V150 headphones which are at the lower end of “studio quality” sets. I liked those headphones because they lasted quite a long time, but it didn’t have the outer noise cancellation nor the boost that I require to listen in detail to the music I make to make the necessary fine tuning.
So I found this pair sitting in a discount store the other day. It is a used pair which cost 20 GBP, and as far as I have seen they go anywhere from 30 to 55 quid online, new of course.
Despite the cost, this set will not disappoint you. It has an excellent sensitivity, a great solid plug, a beautiful frequency range, they are comfortable to the ear, it lowers external noise by (I would say) at least 6 db or more. So if you are thinking in buying a quality pair of headphones, without going crazy on the price, I dare suggest this pair.
* Disclaimer: In no way was I payed by Sennheiser or Sony to publish this post.