"in your post you said even 126 sounds so close to the 101e mk2, can you give a bit more details? Like which aspects sounds similar? what about the soundstage, 126 as wide as 101e? And what about the tonal? As real as 101e?"
What I was trying to say is that MBL house sound is the same across the range of speakers. As the speaker gets larger the sound becomes more expansive; it scales up. I can't really name aspects that are similar except to say that they sound fairly similar, all with great timber and tone.
The difference between the 101E and 111F is mostly scale as I remember, a bigger soundstage. Either will provide a very nice listening experience, especially with the MBL electronics, at least in the Noble Line range of gear.
I have no idea if they'll work in the corner but most any speaker is better when placed out into the room. Maybe you should call Jeremy @ MBL. He can tell you and he is a standup guy. Give him a ring.