How long have you been on buperenorphine? If it hasn't been several months to years I'd say the answer is yes 40-60 should work good for you. But everyone's experience is different, So what works for me may not work for you and vice versa.
No I definitely preferred Subutex when I snorted/ I'Ved it simply because it's cleaner, one less BS thing you were putting somewhere it shouldn't go. But it's usually harder to get. Either an unscrupulous Dr, or an allergy to naloxone, Or if your pregnant are the only reasons I ever hear or have gotten it prescribed as part of M.A.T. (medication assisted treatment). Everyone believes the l naloxone will make you sick if you fuck around, that's not the case. Bupe sticks to the mu- receptors so good that hardly anything can knock it out. However, since it's only a partial agonist (unlike methadone which is a full agonist) it doesn't provide the level of euphoria associated with opiate abuse. Whether you take suboxone or subutex, as long as there is bupenorphine in your system your not getting high from other opiates. Nothing really happens if you try either. I ate 50mg of oxycodone after a 24hr sub break, and all I felt was the slightest bit sleepy. My normal sublingual daily sub hits me harder. But if your just taking sublingual as I do now, I reckon both to be the same. Hope I could be some help.