I have a M149 and IMO it's a very good mic, although very expensive IMHO. :)

I read opinions every now and then about it on the forums, a while ago Jon (Atack) said the mic was losing shootout after shootout and Jules said he has two M149's and he uses them only on toms.

Now please don't misunderstand me, I respect Jon's and Jules' opinion very much although I disagree.