muj, you bring up an important if subtle point. For "distance compensation" I prefer the rising 0-degree response to reach a plateau or "shelf" rather than to drop back down again within the audible range. In Schoeps-centric terms, the MK 2 S is my preference for semi-distant (or more distant) recording rather than the MK 2 or 2 H, which seem to me better suited for relatively close miking, such as in studios.
For those who like to "live on the edge" (shout out to Dr. Noah), the MK 3/MK 2 XS has the "rising and staying up" type of on-axis response curve as well.
The MK 5 in its omni setting rises on axis and stays up across a broad range, but with less elevation and an earlier onset than the MK 2 S or XS. This gives it a different flavor from any of the single-pattern omnis, and is in keeping with its "universal" character. (BTW the pattern switch on the MK 5 is recessed such that the KA 40 add-on sphere can be used on it--make sure that the switch is set to omni, though!)
--best regards