Zephyr Windows – GreenBuildingAdvisor

Has anyone heard of zephyr windows? I have a reputable window sub taking on our project who recommneded this and saw the profile of how many buildings in brooklyn that I recognize that they said use this windows.

They priced me out very well for the triple pan super #82 tilt and turn windows. Not sure about the specs but are the #82 specs that much better than the #70 line windows? in terms of sound proofing, etc. 

We were using about 50-60 windows and we are priced around 81k installed including an aluminum entrance door.

The other option was aluprof MB86 units for 96k. But these are aluminum and european windows from a large reputable company and are also triple pane.