I am contemplating adding vanilla to some wine after fermentation is complete. Does anyone have any experience with using vanilla beans versus vanilla extract? I have read that I should slice the beans open, but I would appreciate feedback on two issues. First, which produces a better flavor, extract or beans? Vanilla beans are much more expensive than extract and I just want to make sure they are worth it. Second, if I use beans, how many should I add for five gallons to obtain a cherry vanilla flavor in a cherry wine? If I use extract, how much should I add to five gallons for the same purpose?