I have to stress to you that I find the EX700 is VERY aggressive in its sibilance, and even if you can tolerate it, I'm not too sure its going to be that great for your ears in the long term. It's also a old design, and while I don't have a pair on hand to compare, I'm sure that newer drivers like the EX600 and the GR07 are going to deliver you something a lot more tolerable and technically competent.
To give you some idea, last time I heard the EX700's I thought that the treble was so splashy that it made cymbals sound absolutely awful. At low volumes, just unnatural and mushy, and at high volumes intolerable.
I'd make a strong recommendation for the GR07; they are comparable to earphones I own costing double or triple the price. They are also more durable and I think are a slightly more practical design than the ear-hanger style of the EX600, though both get favourable reviews for their sound.