Shure se425 vs your standard?

Contemplating spending £200 on some brand new shure se425.
I use the on spotify extremly high quality streaming iphone 5 device and yamaha home sound system

Are they really worth spending £200 for the quality in sound?

Is there a difference?
I've used klipsch s4 and Sony xba-2
Before and found the really nice
The cable broke so like the idea of replacing the items on shure

What's your views on these earphones?
£200 max budget

Don't know the answer, but would appreciate input from audio buffs who have a lot of experience with headphones. I'm not aware that you can try headphones in shops, I'm guessing there's a hygiene issue.
So how do you compare headphones if you don't have friends who will let you try theirs out?

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