TSSM for accounting and english were ACE, at least for me =)
Even though I didn't score perfect scores, they were still VERY helpful for me, I did English for Unit 3 only, but Accounting for Unit 3 & 4.
The English was OVERKILL - if you follow the material and practice it, you are likely to do well. I was aiming for 30 in English but achieved a 38 (Only got three A's), really helped, like seriously.
As for accounting, Jim Economo is a passionate accounting teacher (teaches at MacRob.), even though I achieved a 46, I understood the true nature and essence of accounting - real life applications, not just number crunching or theory rote learning...
Only reason I went to these (and methods lol to get over 25, -> got 33 =) bumped up to 39!!) was because I felt my teachers at school weren't very passionate about teaching - probably explains why our school doesn't compare to the Elite schools out there, dux was an ENTER of 95.45 =X