do whatever you want dude... just trying to help
ask me a question and I'll give you a good, detailed answer with enough basic info for anyone at any stage of music creation... I don't know what you're doing unless you tell us, so please don't take offense if I suggest something that's obvious to you, I am not trying to be condescending, just thorough.
In this case your #1 concern is protecting your hearing.... I reiterate that I think open or semi-open is a good way to go on this score due to the reduced SPL at your ear drum thanks to the venting as well as for accuracy reasons due to proximity effect, etc. Personally I am an AKG fan when I use headphones for critical listening purposes, but lots of companies make very good open and semi open designs at a range of prices.
EDIT: I think you will find that wallet-friendly sennheisers are not as accurate as AKG, Beyer or AT models. In fact, I don't really like the expensive sennheiser designs, I think their drivers sound harsh for production purposes and they are rapidly fatiguing for me. YMMV though... maybe its just me not being used to their sound having enver worked anywhere that had them in the gear closets.
if you want another model recommendation, check out a pair of these:
http://equipboard.com/items/akg-k240
EDIT 2:
Also, the sony headphones mentioned in the equipboard article ARE THE STUDIO STANDARD. I have never worked in a commercial facility that didn't have at least 4 pairs of them in each studio, though they are typically found out in the live rooms for overdubs and not in the control room. Their less obvious drawbacks are being fairly uncomfortable on your head after 30 minutes and a real lack of sturdy build quality if you start dancing around while wearing them.... you see more broken Sonies (is that how you pluralize Sony?) than any other headphone, but then again you see more of these headphones in general LOL, but seriously, every last piece of them is easy to break and they fall of your head easily if you turn quickly and when something startles you while wearing them theya re going to fly off your ears and hit the floor and they will not be happy about it.