[7rojo7]

I have the compact version of the schoeps MK21, I also have the MK5 which can switch between omni and cardiod with a twist of the capsule cover. The capsule is the same as the omni capsule for distant recording (almost all of your examples) which emphasizes the hi end for more detail at a distance. It sounds great as a cardioid also, I've not been disappointed using them on overheads or acoustic gtr or clarinet or sax or percussion or piano.
The compact models are a little more quiet while the models with the CMC body have a little more headroom, I chose more quiet.
The MK21s can be used as ORTF infact you have a great mono image, 120 is good too, an MK5 in omni and 2 MK21 180 is massive.
I use an MK5 in omni (C and LFE) and 2 in cardiod (L and R) XY and 2 MK21s (Ls and Rs) ORTF in my small condensor surround tree, I record all 5 mics seperately and can mix later. I use a similar setup with 3 Brauner Phantom V and 2 Phantom C for a large condensor sound.
A good start is 2 MK5s, with the body or without, or Brauner Phantom Vs, they're versatile and always useful for other things as well. In Europe the prices are less, the Brauner Phantom Vs are going for 1400 euro a piece now