If you have warm and cool seasons where you live, use the gray ones to cozy it up in cool time and cream for warm season to add the airy look you need then. Looks like you need to hem them all.

You have beautiful architecture in your windows! My eye is drawn towards the architecture with the cream curtains whereas the gray ones draw my eyes towards the curtain itself. I would play up the beautiful windows and go with the cream personally.

Am a bit more fond of the cream colored curtains. Good luck!

Cream all the way. It brightens and opens up the room.