What are the differences between buprenorphine and methadone?

I have read some things that say that buprenorphine is now the medication of choice among many individuals suffering from opioid addiction. I was just wondering about the advantages of using buprenorphine as compared to methadone.

: http://alcoholdrugstreatment.info/what-are-the-differences-between-buprenorphine-and-methadone