Forgive me for being blunt, but what is it you want us to help you with?
The girls have offered you many suggestions and you seem very sure that none of them will work or that none have worked. If you want to change something, we will gladly help you to make changes following Tracy's philosophies and principles. But if you do not want to do the things suggested, you need to make peace with that and accept that you have chosen that option. No-one will think any less of you for choosing the second option, but it would be much clearer to all.
Have you taken the
http://babywhispererforums.com/index.php?topic=52283.0 is your LO? Knowing what temperament your LO has will flavour the approach that you need to take with your LO. Spirited LO's, for instance, need things a little slower than Angel LO's.
Have you tried any other parenting book methods? This is not meant to be a judgement. Just that this information can help us understand if you have tried other methods that leave LO's with "a bad taste in their mouth" so to speak about sleep training.
With regards to BFing, at 6 mths old a child should only be having a few mouthfuls of solids. This is a pretty much world wide recommendation. The main form of nutrition should be some form of milk, be it breastmilk or formula. I suspect that your LO is getting too full on solids and has no room for milk, so he thinks that biting is a good form of entertainment. What do you do when he bites?
What solids are you feeding your LO? Does he have allergies or food intolerances
that may be partly to blame for his poor sleeping?
I'm not sure I understand how going onto EASY equates to having to use formula.
There are many, many mothers on this site who follow the EASY routine and BF their babies well past a year.
When you say he doesn't have reflux, why do you feel that this is the answer? Have you had a look at
http://babywhispererforums.com/index.php?topic=654.0 to see if there is a chance that he may have some form of reflux that you can help alleviate with some non-medicinal means?
I know there's alot of questions here, but I am really struggling to get a grasp on what it is you want us to help with. And the answers to these questions would help us to help you. Commendations on continuing to BF with a biting LO!
I know that would have put me off BFing for very long