Sennheiser HD 558 Add-on Microphone

Apologies if this is the wrong thread.

A pair of Sennheiser HD 558's were bought for me as a birthday present and I gleefully await them to come in the mail.

I'm going to need a microphone to use with them, and I have been wondering if instead of adding on a microphone, like the Antlion Mod-Mic, is there something like THIS available that would work with the Sennheiser's? I'm looking for something cheap, but I would be willing to pay for something a little pricier if it has very good quality.

 

I'm guessing the question with the BoomPro is if it would fit with that recessed connection? I did a quick search and found someone selling the HD 558 with the BoomPro on eBay, and from the pictures and description it looks like they just use and adapter to make it work.

http://www.ebay.com/itm/Sennheiser-HD558-W-V-moda-Boompro-Mic-/131169787982

I would probably go with the BoomPro and adapter over the ModMic, but that's only because I don't like the idea of the extra cables hanging around with the ModMic.