I look at one of my 7 GPS devices in my plane and failing that I would use ye olde nav devices like my adf (have to de-tune radio five live first) or perhaps a VOR.
Personally I dont think you can beat the situational awareness that a GPS gives you. I always like ome of the ones that display you as a flashing blob on a CAA chart (such as memory map) which you can have on your phone, a pocket pc or in my case a small tablet pc with a touch screen.
I am aware that there will be others who will rattle on about not using GPS for navigation etc but frankly that is rubbish IMO. If you use GPS together with your maps and looking out of the window to make sure what you see on your map and gps is the same you wont go far wrong.