Is subutex the best way to kick oxy?

No... The best way to "kick oxy"(please be more descriptive in your next post...Oxy could also mean oxygen and no one would advocate for anyone kicking that) is to decide that you want to quit; and do everything you can to achieve that goal!
No...but... No medication is the solution - subutex, methadone...They are all tools to help you quit. But your motivation to quit is the best tool that you have. You can't do it halfway - work with a professional and you can succeed! good luck!