I'm running the FuzeBlock on my wife's 650GS twin and the Centech on my 1200GSA. Both are very good products. If I were to do it over again I'd put the FuzeBlock on the 1200GSA. The design of the FuzeBlock is a bit cleaner.
This goes without saying but I'm going to say it anyway; be sure to bring extra fuses in various amperage ratings. You can buy a couple of variety packs for cheap. We were in Capital Reef NP and I had fuses but not low enough amperage to use.
2015 1200GS Adventure