What's to say?  This is THE shoe polish to get.  Parade Gloss will give you 20-30% more shine than non-parade, but either will fill in discolorations from scuffs, and add oil to the leather of your shoes.

Don't bother with instant-shine or wipe-on polishes.  Those are only good for cleaning dust off of patent leather shoes.

If you want to protect and refinish your leather shoes, Kiwi Parade Gloss is the way to go.  It comes and goes from Anazon, but usually you can find it here.  If not, almost any shoe-selling retail outlet should have a few cans.