Mint Flavour,
I have just completed by final exams with BGS (awaiting results!).
I passed all the first module first time.
I have had a good time with Bristol, good straight down the line instruction in a friendly environment.
I have seen Pilot Assist notes, they seemed okay.
The Bristol Groundschool notes are extremely good, clear, in colour and logical and that isn't enough you get a CD ROM with the notes animated on it.
I think also if you compare the prices (including all "admin" fees) you will see a considerable interest.
Gaz