Yup tried AFT (Law & Systems), and Secombe's for the rest.
AFT is very much on the money as far exams go. I found their notes direct, and accurate. I would definitely recommend AFT for Systems. I did that one second last, and was a bit nervous as i'd heard it was quite tough. After a ton of study, i pretty much sailed through it.
Secombe, far out talk about commitment! He seemed to take a genuine interest in you knowing the stuff, and passing the exams. His texts for the most part are pretty good. Having said that i did switch to AFT specifically for Systems. When it comes to exams, his are TOUGH! If you are passing Gavin's exams i'd be surprised if you didn't make it on the day. Sitting the real Flight Planning exam was a dream compared to his! He really goes for accuracy in his tests.
Cheers,
Greaser