Definitely recommend Australia. Good roads, plenty of variation:coastal, farmland and pastuaral, hilly/mountainous, desert, urban etc.
Friendly and generous people, pretty cheap, and a little bit old-fashioned.
England isn't a bad place. Can be a bit dicey regarding the weather but apart from that it has good scenery, lot's of interesting history and there are even a few left who actually speak English.
I've done lots in France and Italy in the past, but I fancy being able to communicate more fully, particularly when away for more than a week or two and traveling alone.
Scotland is a good shout, with it having to be our summer of course.
Any views on Canada? New Zealand? Australia?