I meant to mention this in the last post. There are many great cordial recipes that call for vodka. Here is a great way to save a lot of money, and still produce great beverages.
Do you have one of these?
It's not just for water! Run your vodka through it 4-5 times to filter out fuesel oils. Many of the higher end vodkas advertise the number of times it is filtered. Will this turn the generic stuff into grey goose? No, but it will make it much much better, and for mixing in cordials I think it creates a great "sweet spot" between quality and cost.