It depends on what your situation is as far as your health and also how fast you want results. Inhalation, like smoking or vaping are great for pain and situations where you need immediate relief. Some people have lung or breathing issues, so inhalation may not be the best way to go. I myself like tinctures or sublingual medicines, where the medicine can get to your bloodstream quickly. With tinctures, you can be very consistent with dosing and know the precise number of drops that get you the results you want. Another method is ingestion of an edible product. Sometimes difficult to dose, and know that the onset of effect is usually 60-90 minutes.
So if it we me, I would experiment with all methods to see what works best for me, what gives me relief the longest.