What parts (FAR, BEC, AUD, REGS) are Yeager strong and weak in? 

I guess my question is, can you use Yaeger only and pass all 4 parts of the examine, or do you still have to use other programs to help in certain areas?

BEC/FAR – I highly recommend

AUD – look elsewhere unless you have auditing experience/or be prepared to HEAVILY rely on the handouts provided. Bulmash is the primary instructor and he fills in holes theory wise that I have personally overlooked.

REG – I don’t know. I first started using Roger and didn’t like it. Then I studied on my own using Wiley/Gleim.

I completely agree with cpanyc007 on the last three (about to start studying for REG with Yaeger)

AUD - I watched one or two lectures then just ended up reading the book on my own.  If it's in your budget, supplement with Gleim Test Prep. After doing a few hundred Gleim MCQ everything starts to make sense.

FAR - Cindy and Phil were my saviors (highly recommend)

BEC - Agree that Cindy did an excellent job with everyting but IT (I don't know anyone who could make that section interesting anyway) I thought Michael did a better job with his sections in BEC than he did with FAR.

FAR is great

AUD sucks but I still managed to pass with zero auditing experience. 

REG seemed good, still awaiting results.

BEC I start tonight and will report back later.

The bottome line is you can pass with any review programs if you're willing to do the work.  I would recommend getting Yaeger for all four sections since there are great discounts available, you'll just have to suck it up for AUD.