I use Oziexplorer to plan and investigate, I have it on my Tablet which is mounted in the car and I use Vicmap 25k to navigate. I also use Doug Stones maps, having calibrated them into Ozi. The roads/tracks etc are reasonably accurate. It doesn't matter if you use Shonky, Geo Vic, Google or any other map to plan, they all help.
I say this because this is the planning and driving around the goldfields phase.
My E20 handheld is not used for any of this, it is my LIFLINE when in thick scrub, to get back to my car.
Google map, Google earth, GeoVic online and any other web based mapping system, is not worth a pinch for navigating if you need a phone signal to access it.
Yes you can print a paper map from any of these, including the apps I use. It comes back to one thing and one thing only, "What do you want to do?"
If the answer is plan and spot from a car, then a handheld GPS is not going to cut it.
If the answer is not get lost, then a handheld or paper map and compass are what you need and the skill to use either or.
If all you need from a handheld is to not get lost, a map in it isn't necessary as all you need to do is mark the car position before you leave it. Then to get back, go into the GPS menu and tell it to go back to the car and follow the GPS directions.
Any hand held will do this providing you know how to use it. To save battery and prevent it from interfering with my detector, I mark the car and turn the GPS off, put it in a pocket and forget about it unless or until I need it.