I went to Chemistry for On Demand/Matrix+ for Term 1 (Term 4 last year), and now I'm going back face to face for Term 2 (this term). The theory books are really good and really organised (even have the covered syllabus points stated at the beginning of each new lesson in the book). While face to face is pretty good, I also really liked the Matrix+ videos slightly better. They had teachers explain things rather than just read out of the theory book to help you understand better, and they explained everything, even the concept check questions in way more depth than face to face (though I understand face to face, because it's only 1.5 hours and time does go pretty fast). The homework questions are also good, and are really good practice imo.
(Strange about ACE lol, all my friends go there and they say it's pretty good)