WTB: ultralight winter pack

I'm looking for an ultralight pack for winter to carry extra bag and insulated clothes. Something with 4000-4400 volume. I'm in a budget so I'm looking for a used pack but obviously not trashed.

It has to be in a large or tall size, able to fit 22 inch torso. Waist belt fit 38 inches.

Examples:

MLD Ark
GG Mariposa
SMD Starlight
(Of course I'd love to have an HMG Porter but even used it'd be out of my budget).

Thx
W