We use the jacaranda as a school textbook. I've also got the excel at home - but it doesn't really cover things is much detail - the opposite of the jacaranda which has way too much detail.
Surfing is good, i like those ones. There are books for every module, the questions are okay, but the explanation is breif. If you can answer those questions, you have a good basic understanding.
Sucess One books are just the past papers with other questions, i haven't got mine yet, still being ordered. Everyone says that they are good too.