I needed a pair of headphones for portable use that would be good enough for quick mastering jobs, yet not be so expensive that I'd be afraid to leave home with them. The Shure range had gotten good reviews so I thought the SRH240 was worth a try.
In the studio I use an expensive closed-back headphone for detail work so I was hoping the SRH240 wouldn't be too much of a disappointment in comparison. In actual fact I've been pleasantly surprised and quite often use these simply for portable listening as they're both comfortable and relatively inconspicuous (especially now as wearing full headphones on the street has become fashionable!).
The one thing I would criticise is that the fixed cable is light and seems quite flimsy, so care needs to be taken to keep it wound up, as I imagine tripping over it would probably damage it quite easily. It's not easily replaceable so you're looking at a soldering job if that happens, on the other hand it looks like it's possible to open the cans, making them at least repairable if out of warranty.
So overall, good value with very good sound for a closed-back headphone, with some corners cut in terms of the casing, which is not a major minus point considering the cost. Recommended at the price!