I'd say this is more dependent upon your application than, "this pair of mics in any situation."
I have a Sennheiser MKH-30/40 pair at home myself for use out in the field (one day, I'll buy a Schoeps pair as well). I'll frequently pull out a Neumann TLM-103/170R pair at work when we're recording in our live room . As far as LDCs with selectable patterns...we have a pair of U87's, but their noise floor can be a little high for M/S purposes. Good for louder sources that don't need a ton of gain, but not my first choice. An alternative to the U87's, that I find more useful/fits a broader set of applications, is a pair of Audio-Technica AT4050's (a highly underrated mic, in my opinion).
So, I've added a Neumann RSM-191 to my collection, and it's an awesome mic. Probably not worth it if you can't find a used one to purchase (which I did). It and the Sennheiser pair remain my go to M/S rigs. And I typically decide based on the recording situation. The RSM-191 is noisier than the Sennheiser pair, but has a tone I prefer. So, if it's quiet stuff...Sennheiser. In a louder environment...Neumann.