They may deliver somewhat too bright sound, but you get what you pay for. The bundle that they come with is good enough to get started in music production until you find what's good for you.
I find these were very good at making the occasional tune on and for light mixing. I find these are very good for doing EDM style of music. But when want more accurate range the DT100's come out. They cost around £30 so you can't complain really..I purchased this with my sound card and microphone, a p[art of a bundle. I wouldn't purchase these separately.