I got Vodafone edition ( 925.4 - 16GB) : bad decision - it shuts down or reboots unexpectedly. Also the displayed screen gets shifted attimes so part of the top screen is mirrored at the bottom.The camera is great. Adding Photoshop Express, one can get really nice pictures.
The GPS is fast and driving with offline Here Maps is good enough. However, just following audio indication is not enough: you have to look at the screen toget an idea of what you are supposed to do.
The iGO 8 on my old Win 6.5 was better. This does not even support intermediary stops, so it could become a pain to decide on gas station on a highway.The battery life is not good but also not bad. Probably this is the average these days.
Conclusion: I would say the separate parts are great ( GPS, camera, software) , but putting them all together one also needs the special luck part.