Go with kratom. Bupe is imo a harder addiction to break physically. If your not mentally into quitting then the physical addiction doesn't matter as much. But in my personal experience I would never have gotten onto suboxone if I had known how long it would take from last dose to normal (7 days for my first hour of sleep, and 6 weeks or so to "normal") I understand for some people that are in very dangerous use patterns that bupe can be a life saver, and many use kratom to just quit sub. However, and some members wont like this, but I think if your wd isn't painful then you wont quit for good. There is no such thing as an easy taper or wd. You buy the ticket, you take the ride. One of the biggest driving factors in my staying opiate free was the spectre of withdrawal hanging over any potential use. A motivation that I got taught again years later when I got some Percocet for some dental work. 4 days on em and I wd'd. I was unbelievably pissed off....and that was a good thing. A great reminder why I stopped.
Kratom is very capable of easing 80% of your wd symptoms, is legal most everywhere, cheap and helps with the boredom/depression aspect. Obviously yes you can become dependent on kratom, but the wd are not nearly as bad, nor do they last as long as traditional opiates. But it works as a great distraction to go about daily life while suffering just the right amount, so as to cement into your brain that you cannot use opiates anymore. Rewire your noggin!