First of all, can you coffee fanboys please not derail this thread.
I'm a multi-hot-beverage drinker, I like tea and coffee but I prefer tea for dunking biscuits. Call me a tea fanboy if you want but nothing comes close to tea for biscuit dunking.
I go through stage, some weeks I like custards creams and others chocolate digestives. On the odd occasion I like a good hobnob.
What's you biscuit of choice for dunking?