Part of what I like about the Schoeps setup is that everything has great resale value. I leapt in without worrying too much if I didn't like it. I started out with a pair of mk41 caps, which IMO are really versatile...indoors, outdoors, far, close. I bought them new but they do pop up occasionally used, the 41s do seem to be the hardest to find used. But even new you're gonna get back 80-85% if they're matched and in nice shape. I think mk4 is a really versatile option too and easier to locate used. Then bought a used nbox and a new pair of nbobs from Nicky C., who is great to deal with. Added a used m10 to get me rolling. Once I decided I was good with Schoeps I added a PFA to be able to connect caps>nBob active cables>PFA>Marantz 661 for another flavor when I don't need to hide the gear, and a pair of used 4v caps. I also went this way because I'm on a weight limit due to extensive spinal surgery and my setup is well under the 25 pounds I can carry.
I don't have my IPA yet but I love that it's small and allows me to run my m10 for a super tiny setup, even smaller than with the nbox. Jon makes good stuff, like the PFA I expect clean transparent sound.
I think Neumann km140s with actives would be my second choice right now, it does so happen there is a pair for a screaming price in the yard sale. Add a p48 xlr in recorder and a great setup that will sound great. Won't be as tiny as the Schoeps setup, but I've stealthed a lot of shows running PFA>661 in my pocket. Just takes a little more care.