Eclecticism in the Dhamma (as per AN 3.72; AN 3.65; MN 20)
The Pali suttas say there is only one path to Nibbana. 


  273. Of all the paths the Eightfold Path is the best; of all the truths the Four Noble Truths are the best; of all things
  passionlessness is the best: of men the Seeing One (the Buddha) is the
  best.
  
  274. This is the only path; there is none other for the purification of insight.
  
  Dhammapada