what is the best ultralight backpack for hiking?

[mrforestfriend]

i just read an article in which they mention 13 different products
Osprey Atmos Ag 65 Hiking backpack
Deuter Trail 30 Men Hiking Backpacks
Ferrino Transalp Zaino backpack
Salewa Alp Trainer 35 + 3 L
MONTIS SPEED 28L Backpack
Osprey Stratos 34L Backpack
Osprey Fairview 55 Women's Travel pack
Gregory Maya 22- Best Ultralight Backpacks women,s
Deuter ACT Trail 30L Hiking Backpack
Deuter Aircontact Lite 60+10 SL Backpack
Black Diamond Blitz 20L Backpack
Granite Gear Crown 2 60 Backpack - Men's
BECCYYLY Rucksack Outdoor 60L Backpack
suggest which is the best among these?