i'd been a big fan and evangelist for my Rode mics before i got
my Baby Bottle, and it's now my first 'go-to' mic. i'd agree with a few posters above and say that it is fantastic on acoustic guitar, especially in the neck position, it gives a great definition whilst picking up good low-mid and bass definition.
i used it on a bass cab recently and was also really pleased with the result.
for vocals, i think i'd agree with some of the comments above. i find it great for most rock and pop stuff, but i was looking for a really warm soulful bluegrass sound (a brit recording bluegrass? did the world just stop turning and change direction?) the other week and i resorted to my GT67 for a bit more warmth and proximity depth. it just felt better.
but on the whole, i love my baby bottle - and i agree with Ozraves, it looks damn cool too - i know it sounds stooopid, but you sling that wierdo sucker in the shockmount in front of an impressionable singer for the first time and they just get really excited about using it, and bizarrely, it can lead to a great performance. psychologically i think it's important - get a singer supporting one of your mics and they just always give you their best. the other week i wanted a different sound from one of my regular singers and slung up the Rode, and i immediately got "Awh - why are we not using the Bottle???"
go figure!
also used on: bouzouki, classical guitar, bodrhan, VO, audio drama, 12str guitar, hammer dulcimer (oh yes!), violin and recorder - all good!