One of the most widely used microphones in history, and don't let the "not good for vocals" (which it has been used for more than anything else) scare you. It is not the flavor of the month, that's all.
The U87 takes EQ VERY well. So sometimes if it isn't great on something flat, you'll be really surprised at how good it sounds when you get to mix stage and alter it a bit.
And when you get some extra cash, you can always send it to Klaus Heyne and he'll turn it into something on a whole different level.