I think that in this specific thread it should be pointed out that John Wilett is, or at least was, employed by Sennheiser. I do respect John-s opinion as his owns and built on his personal experience, but the thread so far has taken a turn more or less sounding like a sales broschure. Personally I think it very premature to talk about the sound of the not-even-press-released 8030. Sorry.

Personally I run a MKH30/40 pair in a stereo Rycote for outdoor recordings into a Sound Devices 722. This combination has never let me down, but I agree that it can be a bit on the bulky side but that has not been a problem for me. There is an advantage of having a bit larger "blimp" in that, and this i my guess only, it will give a bit more wind protection.

One alternative "blimp" to look at might be the one made by DPA. I have never used one but if I understand correctly it folds together when not in use.

For really tiny MS stereo setups with top quality mic, currently I know only of the Schoeps compacts as a solution. The Neumann combination is not very much smaller in real world application compared to the MKH30/40.

Thinking out of the box, you might want to look into stereo mics, although the good ones are rather far between. The typical ones, are not quite up to it but there are things like the Roede NT4, quite useful despite the low price. You might like the Sennheiser 418S (really made for other things, but you never really know until tested).

And why not the Neumann usm69 - a bit on the heavy and expensive side perhaps.
Georg Neumann GmbH - Products/Current Microphones//

There used to be a few from AKG (discontinued I believe).

There is also yet another alternative in the Soundfield mic that gives a full surround recording if you run it into a SD 744..
SoundField: ST350 Microphone System

Regardless, happy hunting for the sound you look for.

Gunnar Hellquist