So many people talk shit about methadone when they've never tried it. If you feel as though you want to do maintenance, most people do chose to start with buprenorphine especially if your using pharmaceuticals rather than IV heroin. For myself, buprenorphine was not a good maintenance medication as it did not help me with craving coming off an IV heroin habit and it also did not do much for withdrawal symptoms when trying to make the heroin to buprenorphine transition.
I'm on methadone now and feel so much better at 40mg/day than I ever did at any dose of buprenorphine. I'd recommend thinking hard about weather maintenance is the direction you want to go at this stage of your life and if it is then try buprenorphine first, as it seems to work well for those who have small to moderate oxycodone habits. See how it works and if it doesn't help much then put some thought into methadone, although I wouldn't recommend it for someone with your sized habit who hasn't tried any other way to get treatment.
I'm on methadone now and feel so much better at 40mg/day than I ever did at any dose of buprenorphine. I'd recommend thinking hard about weather maintenance is the direction you want to go at this stage of your life and if it is then try buprenorphine first, as it seems to work well for those who have small to moderate oxycodone habits. See how it works and if it doesn't help much then put some thought into methadone, although I wouldn't recommend it for someone with your sized habit who hasn't tried any other way to get treatment.