re: OT HVAC peeps...variable speed really worth it?

guess yall sick of hearing it. Just figure a lot of different people on here with lots of varied input so I ask...and I dont feel like working at the moment.

I thought about the foam route but it was pricy and idk if im sold on it. I have read great things and bad things. I also have some friends that did it in there home...and they wound up with a leak (not from the foam) and they had to redo whole walls to fix it. The foam made it impossible to figure where the leak was originating from.

Thats interesting about the cell reception in a house with that silver stuff. Too late now but ill keep that in mind if my reception is doo doo lol.

I did opt for the best low E windows in hopes to just keep the unit from running a lot in the first place. I think the variable speed seems like a nice concept I just wanted to get some real world feed back from users or installers.