Edited by ubikutz - 1/31/12 at 9:32am
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TripleFi 10s from Amazon using flip mod (See TF10 appreciation thread) so they are comfortable and a replacement 10VI cable from Logitech so that you have the remote and mic. All for about $180-190 US.
I use this setup to commute everyday to work on the Subway. The TF10 are not my favorite overall but are for my commute to work with my iPhone.
One more thing - where did you get the replacement cable with mic? I can't seem to find in any of amazon's europe stores.
Does the mic cable have it all? (mic / talk button / volume buttons)
I agree on the tf10 for the most part. The 'flip mod' is where you turn them upside down so they are easier to fit (for some, not me) and lat somewhat flat. Not sure how they would feel with a hat. They are fine with my hood worn the over-ear way. I got my VI cable from both logitech site and from Amazon for $30. It does not include volume but after getting used to them I don't mind it at all. I love how simple just the button is, less bulk. I remember the mic/button/volume 'contraption' on the MTPC I used to have. It was basically an anchor that was heavy and would cause the cable to swing everywhere. So annoying. The IE8 one wasn't so bad.
However, Westone will be coming out with their mic/button cable (I believe similar to UE one) soon and it is their premium cable which is my favorite so far. You may want to consider some of their headphones as well.
For the most part, balanced armature iems will isolate around the same (in general), which is pretty good. I wear my tf10 with the included foam tips from comply and they isolate to my satisfaction.
What imboden said, I could not have said it any better. 
Here is a (crappy iphone) pic of my TF10 using flip mod.
I personally have zero experience with the Shures and have be contemplating a 535 purchase for a long time, just have not come across the right deal for them.