I would write down what you like most about each and cross-ref with what you need it for and 'voila' you will have made your own decision.
My light pink pref. is closer to the LV F bag and that would be fine if it was just for say ticket, pass, keys, lip balm and CC but the Prada is more of a little bag to if you also need to add a few makeup items, tissues, pen, lager set of keys etc then you may need the depth and the crossbody/shoulder function of the bag. The LV chain is removable so maybe you could also add a longer strap/chain if you needed to.