I brought the two m160's for Overheads for the obvious cymbal to digital reason.
I had heard they were great as guitar mics, so I tried them for a session and thought they nice and smooth.
I normally double mic with a SM57 so I get both sounds and adjust to taste.
I got the NTK's just recently and moved the ribbons to Guitar.
If I am going to go back to ribbons on Overheads then I want another set for guitar.
I have had 2-3 calls in 5 years asking if I had a Piano. The Pianos I have done have been Rhodes, or some good digital ones. Of course some bad digital ones as well which get distorted or something so you get rid of the cheesyness.
I would actually like an upright for myself, although no room.