I've been playing for 15 years, and only used this product for the first time recently. The difference? Well for lead guitar especially it makes each bend smooth and silky, and vibratos effortless. Reduces string to fret friction caused by the accumulated dirt and removes tarnish from the fret wire. The result is a smoother playing experience from your favourite axe. I've even noticed rhythm playing has a little less fret noise, very handy if you have hot, cranked up pickups. Now I'm lost without it. Love this product, clean and simple.