Hi Graham,
Have just gone down the same route although bought a Makita from Screwfix instead. Great results from Farecla although after using G10 I still had "machine haze" or hologram marks in bright sunlight. Bought some G4 liquid at the weekend and it has worked miracles, not the slightest of "whirls" evident even in the brightest of sunlight, bodywork now looks "wet" even without any polish/glaze
For your next step have a look at this, it certainly changed my views on things
http://www.nsxsc.com/nsexcitement/waxtest.html
and then
http://www.advancedcarproducts.com
there are also some good reviews on epinions on these products also
http://www.epinions.com/content_239892860548 Best of luck Noel