Hi Dennis,
I purchased Heidi's course for my first ever build which was a concert ukulele. The course example is a tenor uke but all the principles are the same as far as I can tell.
I found the course to be an excellent guide to the planning, preparing, building, and finishing of an instrument. I was very happy with how my instrument turned out for a first effort. It's worth noting that Heidi's course includes a simplified version of Robbie's FP course (which I subsequently purchased and found extremely helpful) relying on sawdust-and-shellac as the sole form of pore filling. From what I recall without going back to check, she does not bind the body. The instrument still looks good.
I am only answering part of your question as I can't compare it with the other course. But I will add that Heidi's course, Robbie's FP and fretting course (the Kent Everett version) plus the Cumpiano book were the instructional sources for my first guitar build: a steel string with bolt-on neck, the result of which, given my novice skill level, I am happy with.
Hoping this information is helpful to your decision making. ...Ted