Nikon's got its own solution for adding native geotagging to your existing DSLR, but the GP-1 dongle definitely has its drawbacks. Aside from sucking down around 4x more power than Gisteq's new PhotoTrackr Plus, it also eliminates the ability to use a dedicated flash in the hotshoe while capturing GPS data. Moreover, it has to warm up every time you turn the camera on / off, and there's just 18 tracking channels compared to the Gisteq's 44. Regardless of the back and forth, we do appreciate the PhotoTrackr Plus' ability to plug directly into the 10-pin terminal that few amateurs even think to recognize, though we do fear that the reliance on Bluetooth could cause issues if you stray too far from the transceiver. Still, this newfangled dongle is far superior to its past iterations, both of which simply logged data as you went and then added metadata after you synced the information with your images via PC; this dongle, however, embeds the data right away into every image. Better still, there's even a price advantage to going third party -- Nikon's aging GP-1 is pushing $200 on many webstores, while the Gisteq apparatus can be procured right now for $179. Take your pic, as they say.