OsmAnd: tons of customization options, "prefer unpaved roads" routing option (great for adv motorcycling), can follow GPX tracks, battery hog.
Organic Maps: quick, minimalistic UI, can display but not navigate along GPX tracks. Lighter on battery. I use it like I would use paper map when hiking.
Organic Maps: quick, minimalistic UI, can display but not navigate along GPX tracks. Lighter on battery. I use it like I would use paper map when hiking.