Ive got a little tip, if your using the tyre spray then to avoid it going all over your rim use a bin lid to cover the alloy. My bin lid is perfect as it has a handle and is 16". I just hold it and spray round.
Then again the easiest and cleanest way has got to be applying it with a cut to size sponge.
I like Meguiars endurance tyre shine, it smells nice and last quite a while. Lasting a long time isnt always that good though, It attracts brake dust like crazy, and makes a mess off your sponge when you next clean your wheels. Also if you get endurance on your hands then touch your paintwork its a pain to get off.