Maggie 1.7i vs Marin Logan Electromotion ESL - Which is less critical for room placement?

Before you even ask that question, Martin Logans and Maggies sound very different. I would listen to both to see which you prefer. Given you have Vandersteens, I would expect Magnepans.

If you treat the front wall behind the speakers (look at GIK Acoustics) you can place dipolar speakers closer to the rear wall (20-24”) without them getting shouty.  Note I have owned Maggies for 25 years and currently use 3.5s.  

I'm familiar with MLs & Maggies & like them both for different reasons. As great as either speaker is, niether will sound up to their potential with bad placement. I've read a few online discussions stating MLs can work closer to to the front wall than the Maggies. Looking for somebody that has had experience placing them. Thanks for your input. I'm going to look at the place you suggested for room treatment as well. 

I had 1.7s and really found that the placement concerns are way overblown. I think the most they was away from the front wall  2 feet and they sounded beautiful.

Well that's encouraging! Thanks

I’ve owned the MMGi and currently own ML Aeriusi and neither seem to be very location sensitive in regards to the sidewalls. However, the depth and realism of the soundstage is directly proportional to the distance they are from the rear walls. The ML may give you a little better bass the closer you place it to the rear wall but at the expense of the soundstage.  Both have an extremely narrow sweet spot almost regardless of the their relative location from surrounding walls. You’ll sorely miss your 3A if/when you switch to either. I switched to the 2Ci from the MMGi and it’s better in all aspects.