I’ve gone back to houses I’ve done before with my old assortment of squeegees and I’m always faster with my one squeegee! Even when they have large plate glass windows. I’ve been doing this for a long time so I’ve been impressed to see it happen over and over again. One 12” channel all day every day and a couple small channels for the cut ups. 
KISS
Less is more.
You know what I swear by 14” channels for resi, but after reading this, that totally makes sense it always a little too big for same picture windows I think I will be ordering a couple of 12” right now to try them out
By the way first time posting but long time reader and member for couple of years
Oops! Posted to the wrong thread. 
Wow I’m shocked at how many of you like the 12’ maybe you guys have smaller windows around you?? Lol way to small for me. I use 16” 95% of the time and then once in a while grab the 12 or 18
And never used anything but a 18” mop in 8 years
With the style of many residential windows here, a 12 or 14" is common.
