I do voiceover work(corporate media and broadcast mostly) and really like my Neumann TLM 103 and have a Sennheiser 416 as well.
But am thinking about adding a third mic to "round out" the mic locker.
Budget-wise, I could go as much as a new U87ai.
But would the sound really be that different from the 103? If not, maybe one of Neumann's tube mics? Conventional wisdom is pushing me towards the U87ai, but I'm trying to keep an open mind although I am somewhat biased towards Neumann.