Would you still recommend the MS2? They have the tag, but you don't seem to like them very much any more...
The problem with the MS2 is that they deliver exactly what they claim to, yet some people don't really want what they deliver, despite thinking otherwise.
I recommend them if you want a very aggressive, up front and engaging headphone.
I would either get the MSPro, DT250 or AD900 if it were MY choice.
I'm not sure which ones I want. I know I'd prefer the DT250 to the AD900 and possibly the MS2 to the 250. It's really hard to pick headphones without hearing them!!!
How do you know you won't like the AD900?
Saying you know you'd prefer the MS2/DT250 etc when you haven't heard any... you need to back up and accept that you have no idea whether you'll like ANY of the headphones being discussed unless you hear them