Like GtE I did CPL distance learning with CATS (around 10 years ago) and the material was certainly good enough to pass the exams - I seem to recall they were getting almost 100% pass rate on both CPL and ATPLs.
In my case (because my brain works well with cramming) I did buy a couple of the Key Notes/Facts books which they offered - certainly worked for me
The reason that I chose CATS was that (Dr) Stuart Smith seemed genuinely intent on teaching the subject (as opposed to just cramming for the exams). During my time there I witnessed a number of students, who had struggled elsewhere, getting whatever extra tuition/attention was required.
Unless things have changed, over the last decade, I would suggest you have a chat with Stuart - her was certainly:
- Very approachable
- Interested in feedback, if it was going to improve the transfer of knowledge
Just my recollections - from a decade ago.
OC619