Matador Globerider 45 vs Cotopaxi Alpa 42. Initial comparison

I need a one bag travel solution which I will be able to take as carry-on with me. I spent entire week of watching reviews, reading articles and ended up ordering two backpacks, which were available in Europe (Poland). Here I am showing you both and sharing my initial impression and experience. Both backpacks are new and were not used for travelling.