I have both right here next to me, and both have excellent cartography. I've used the Explorer Charts while cruising and they are flawless, and, knowing the cartographer of the NV-Charts, I expect that they are as well. From all areas I've compared they've been accurate. They both have a lot of additional information in the chartbooks. The Explorer Charts are smaller (and "prettier" in my opinion) while the NV-Charts are full-size, and also comes with a CD and smaller "Harbour and Anchorage Pilot Book." I don't think you could go wrong with either. If you're a stickler for full-size charts or you really need the charts on CD as well, then go with NV-Charts (Explorer Charts might come with a CD now, so check before you decide). If you have limited space for your charts, Explorer may
work best. Either way, have a great time in the Bahamas! (Wish I were going this year)