I have a set of Shures and liked them until the cord broke. Then I picked up a set of Westone W3's. Yes, more than twice the price but the difference in sound is incredible.
Got a new cord for the Shures and they've been sitting in a bag unused. I just can't go back to them.
The Westones are clear with punchier base and isolate far better. I can easily keep the volume level below 1/2 and hear everything in the music and very little if any ambient noise. Downside is that I can never go back to "cheap" headphones again.
A good set will last you years. Spend the coin and get something you'll really enjoy.