Hi Hopeful Pilot,
Bristol Ground School has excellent notes and a great CD-ROM package to back it up.
However I ordered my module 1 from NAC last week. I have checked their notes out back last July and thought they were pretty good.
NAC's students have done pretty well in the exams so they must be doing something right.
I'll let you know in a couple of weeks once I have got through a couple of weeks worth of work with the course.
Best wishes,
Charlie Zulu.