Had an Alpine as well. Still do. Easy on and off. To me a quiver is a quiver is a quiver (for the most part) because I hunt almost exclusively from a tree stand. My quiver needs to get the arrows from the truck/house to the tree. Once in the tree, it hangs there. I do not sight my bow in with a quiver or hunt with one on my bow.
Octane is easy on and off too. It has magnets in the top that help guide each field point or broadhead into place. Kind of nice.
If I had to pick one over the other, not sure I can. I'd probably lean towards the Octane just because I remember the Alpine being just slightly difficult to place on the bow in the dark as I couldn't remember which side to start first.
I also have a quiver that locks the arrows in at the top and bottom (nock). It was nice because I was carrying both aluminum and carbon arrows at the time.
Whichever one you get make sure it will hold the type of arrows you intend to use.