I'm planning on getting a pair of Etymotic ER4-S to use mainly with a portable source (+ TAh). Should I go with the ER-4S or the ER-4P + "ER-4P->ER-4S Cable"? Do they sound exactly the same? I'm worried about the microphonic effect since I'll probably use them while walking to school. Or, maybe...

I was wondering if anyone has tried the ATH-A100Ti yet. Some members have already written (quite positive) reviews on the ATH-W100 and W2002, but none on this model. [ H r D c O r 3 ]