Is Monitor Audio Gold 200 excelent pairing with M700s , how about the Gold 100 5th Gen?

Of your options, go with #1 - the Gold 200s.

I have 300GXs and they’re fabulous. Took some experimenting with amps - I wound up with Exposure 3010S2 monoblocks in preference to M700s, but the preamp and CD transport are also Exposure, so that makes sense.

The 200s are terrific speakers, and I think well worth it over the 100s - if your room can handle them.