I own a Rode NTV and a BLUE Dragonfly. While obviously not the exact mics you're considering, they do have the characteristics that both companies are know for.
Rode large condensor mics are very good sounding mics that are fairly neutral until you start giving them more SPL. Once you start pushing them they have much more bite to them, by that I mean they really can develop a nice full sound. BLUE on the other hand makes mics that typically have a mildly sculpted midrange along with great detail on the bottom and top, quite different from the Rode mics.
So much depends on the rest of the chain, but if that remains fairly neutral and offers good headroom, you can get great vocal and acoustic guitar sound from either mic. The Rode will be the most neutral until the playing or singing gets agressive, the BLUE will offer more detail.
It's a tough call, both companies offer great value in their mics.
Hope this helps.