I had a Givi 45L on my KLR, but I will be using soft luggage on my Tiger800XCx instead of a top box. I fill my panniers up first so it seems the top box always ended up being filled with what was left. No way to fill a void or cinch the contents. Soft luggage duffles seem to give more options & some have lashing rings to strap other things to it. That's important to me because I carry a bigger tent than most so it won't fit in a top box or pannier. Would post a pic but I haven't figured that out yet.