The simple answer is that once you immerse yourself in any one of these methodologies for any real amount of time, you will know what works for you. The journey of self discovery is exactly that - you yourself must decide what grabs you and how you might benefit from each concept. We, the students, are just as varied as the concepts and thus can only explore with the hope that we might find something that resonates with us. There can be a sense of intimidation and perfectionism the emanates from spirituality, and surely this is exactly what must be avoided? Ultimately, the majority (and depending on your beliefs, perhaps all) of rules and regulations that have created the systems of spirituality with which we are now acquainted arose from people just like us. In the same ways that we have flaws and imaginations, so do our masters, and their creation of our guidelines was their own journey.
Exploring your spirituality must include the active seeking of information from the known world, but also - more importantly - a delving into your own inner world in which you feel right and wrong and reveal your own unique journey. Much of that begins with never believing you have found the truth, but rather always continuing as though there are infinite more thruths to be found!
Good luck, and be strong!