Well I just received mine at work today - and

what a great buy!
Compared to my Sennheiser HD595, the DR150's are slightly less open and more direct. They may have a slighly lower bass output, but they are still great for rock music, which is what I mainly listen to. Tried them with a bit of pop/electronica and some instrumental as well, and I was very surprised to find that they were such good all-rounders - especially for £30! The wearing comfort is great - they are a bit tight for bigger heads, but that'll wear off after using them for a while, and the detachable cable is a nice feature.
I would recommend these even at twice the price, so at £30 these are a true no-brainer.