Majority of the candidates who are eligible to sit for the exam have a Master's degree due to the 150-credit-hour rule. Master's classes don't help you much with the exam, especially if your undergraduate degree is not accounting. Becker is a good review class, even though it is not cheap. I thought it worth the money to take it. However, the key is that you need to have the determination, discipline and persistence on passing the exam. Set some objectives for yourself, and working toward them.

Again, this is personal preference. Online and self-study are cheaper but requires more discipline from the candidates.  Live classes are more expensive, but offer the structure and feedback that you may not find with the online or self study format. I chose the live class format because it like the structure and thought it would increase my chance of passing all parts on the first try.