Cookie and Cream is my all-time favourite ice cream flavour! It the safe choice and fail-proof flavour when having 10sec to choose from the buckets of lovely ice cream standing in front of the ice cream counter.
My favourite brand is usually Haagen Daz because I like hard and real hard ice cream! Don't like those melting soft ice cream. Another favourite brand is Ben's and Jerry because of their creative unique flavour such as strawberry cheesecake etc!
My recent favourite brand is Holly Brown. It is actually a coffee place, but they do cold stone ice cream mix, which surprises me with relatively sticky and hard ice cream. Usually, after they mix the ice cream, it turns runny because of the exposure to air. But Holly Brown's managed to remain hard and I love it!