Now that I have both, I mean all 3.
In order of preference.
1- top case
2- saddlebags
3- tank bag
Tank bag are a pain... but good to carry few things and extra storage. I put my riding gears in there on long trip. Saddlebags are great but create a lot of drag at highway speed. I can feel it. With the top case no change in drag, fuel economy and it's out of the way. I love it and that thing is there to stay! If money is right later on I might get a Givi 55 NT... but for now it's perfect for my budget and use.
In order of preference.
1- top case
2- saddlebags
3- tank bag
Tank bag are a pain... but good to carry few things and extra storage. I put my riding gears in there on long trip. Saddlebags are great but create a lot of drag at highway speed. I can feel it. With the top case no change in drag, fuel economy and it's out of the way. I love it and that thing is there to stay! If money is right later on I might get a Givi 55 NT... but for now it's perfect for my budget and use.