I don't know why people are always saying to switch to diazepam. It is extremely fast acting, with a very short duration of action. The reason why Valium dt's are generally mild is because diazepam itself is very mild. I mean 10mg diazepam = 0.5mg alprazolam(Xanax) or 0.5mg clonazepam, or (roughly) 1mg lorazepam.
But I assure you coming off of high dose diazepam can be quite Intense. What people don't understand is that half-life and duration of action are not mutually exclusive.
In the case of diazepam, it has a long half-life, yes, however it's duration of action is notoriously short. This is because diazepam is rapidly redistributed from the CNS to other parts of the body. In contrast, lorazepam, which has a shorter half-life is actually longer acting, as it's lower lipid solubility means it takes longer for it to reach a sufficient concentration in the CNS, but once it's there, it lingers a good while.
But my point, is that diazepam hits hard and fast, and wears off quickly, which are the hallmarks of an addictive substance. However, it is more mild than your typical benzo's of abuse.
Personally, I think lorazepam is a good benzo to taper down with, but seeing as that is your BOC, it might not be a great idea!!! But, it's slow onset and long duration of action make it ideal for that purpose, and lends itself to a milder detox.