Best Lens and Screen Cleaner?

Having tried a whole bunch after randomly getting quite a few as Christmas Stocking stuffers the one I keep going back to using with best results is the: - Spudz

It's really weird how much better it is than the other clothes, it does actually make your glass lens that much shinier and clearer and it does work great on your monitors, DS screens etc and with the added bonus that it can be tidied away into its own little pouch and clipped to whatever you fancy, in my key as a keyring so I've always got it.