Wes, thanks for the advice.
Already ordered...just delayed 'coz can't touch vinyl siding at low temps.
No point in having them arrive only to store them in the basement.
We're not getting the super duper low e and all that stuff.
Just regular vinyl clad Energy Smart double pane (sealed) units.
Did our main floor already...it's wonderful to pass by a window and not feel a draft.
I was "supervising" when they were installed. And just as well, too.
I had a roll of that pink styrofoam sill gasket ready.
They installed the first window, I looked at the sill gasket package, it's still in the wrap.
So, out the window goes again (until they got it right!

)
Years ago Hydro came in through a sponsored reno program and did an air test.
He said we had the equivalent of a hole the size of half a sheet of plywood missing from the house!
The main floor reno replaced all the 1977 metal windows...yup the ones that ICE UP when it's 10 below and water ruins the windowsill. I bet there's still 1/4 sheet equiv. missing when we're done (gaps in plywood under vinyl).
Glad you're saving that much, Wes.
There's no natural gas on our rural street, we're on electric!
Hence the basement woodstove which keeps floors, walls warm.
If I were building a NEW place, I'm sure we'd go triple.
We'd also see that other stuff was done right too.
Barb