The convertible quadrant is a huge help and gives us the extra room we need to meet our families' needs. Was it expensive, yes! But there are not many options that provide the size and features that come with this design. 
We do not use the wine rack and would prefer if that were removable to improve storage. 
Using the single quadrant as a freezer, we find it better suited to organize our food than the former pull-out style french door freezers. We did not lose as much freezer space as I thought we would with the single quadrant. Plus if it's needed in the future, we can easily switch the right-hand side back to a freezer.