Believe it or not, the kind of club soda or tonic you mix in your summer vodka cocktails makes a difference — a huge difference. The best ingredients give you the best tasting drinks, and this applies to tonic and club soda too. Our go-to favorites are Fever Tree and Q Tonic. They both have several different varieties of mixers, and we love them all. Try them out, and we bet you’ll never buy the big plastic bottle again.