I have the Ribera, never liked the Alma until I saw the Vernis Alma. The Ribera is different, classy, roomy, comfortable to carry & beautiful with the red interior against Damier. I don't know about 'sagging or collapsing' Riberas...maybe the fake Riberas do that...I carry a lot and it does not sag or have dents. It's a structured bag. I love it and prefer it to the Alma, but you can't go wrong with either. You will simply be one of a few Ribera owners or one of many Alma owners that just have great taste!
Let us know what you decide.