Which type of topboxes does everyone use for their adventure bike? I'm looking for one. I looked at the BMW box and it was OK but pretty expensive and small. I might get a cheaper brand and bigger in size. I'm thinking about the Givi V47NT - https://www.amazon.com/Givi-V47NT-Black-Litre-Monokey/dp/B00FV8QHTY Anyone tried this?