The .7 has a smaller bass diaphragm, it has less “bite on the air.” Consequently, the bass will be less than the 1.7 if you wish to use it in a larger room. However, the DWM Bass Panel can be used to supplement the bass.
The .7 offers full-range, quasi-ribbon technology at a price that some audiophiles spend for speaker cables. Value is what Magneplanars are all about.
The .7 has an optional oval base as shown below for modern decors.