Australia 4WD Raster Map Collection

Yes agree with Richard - the Natmasp are 250K scale topo maps - the Hema maps are more orientated to providing information on main routes/tracks, interesting features, permits required with distances and coords shown (to save you figuring it out yourself). The maps are at various scales but typically a much smaller scale (eg 1:100 0000 Kimberley edition)...but some are also 250K (e.g. Midwest). Because of the scale only the main tracks are shown on the Hema series of maps. The natmap 250K series generally shows more tracks (but with no indication if you are allowed on them or if they still exist). Australia wide coverage is not 100% with the Hema maps also.

If you already have the 250K maps would definitely get the Hema ones - as RK says - you can never have enough maps

Cheers
Greg

I have found the Hema maps next to useless for all but tourist routes- and even then they have glaring omissions, the topo maps are the best followed by qpa maps with the Hema maps back with the rest of the averadge quality roadmaps

Yes - Which series of maps you find most useful is dependent on end use. Hema maps are not much good except for intended purpose. Pity the qpa maps aren't available in digital format.
Cheers
Greg