OK... I have been right over WA in a 4x4, and I'm working my way now around the east coast in one.
WA is very beautiful, but its beauty lies in its stark isolation and desolation.
My recommendations, in order, are:
1) Exmouth/Coral Bay - the best place I have seen in Australia, bar none:
http://images.google.com/images?clie...N&hl=en&tab=wi
2) Shark Bay/Monkey Mia - the place to go for awesome fishing/dolphins/shark/etc. Home to a massive world heritage area
3) Kalbarri - the town is set in the nicest location that I have seen
4) The S/W corner of the state - lots of wine, waves and fun.
I would recommend going there if you are the outdoors type who likes the idea of a beach all to yourself and can be self sufficient. There is really nothing that I have seen yet over east that is as rugged or remote by a long shot (I used to travel/camp in the north of the state with my own fuel, water, CB and satellite beacon). A lot of people die over there in the remote areas by not being prepared, and I have seen some horrible car accidents in remote areas.... try to get a vehicle with a bullbar and don't swerve if something is on the road. You have to travel a long way over there to see things, but it is worth the trip.