I switched to Dumonde Tech Lite from Prolink Gold. Can't remember why I made the switch but I keep buying it so I guess its ok LOL
Seriously though I think with the Dumonde Tech Lite an application lasts a little longer and runs a little quieter (splitting hairs), but it can get a messy and attract grit if I don't periodically wipe down with a rag beyond normal full on chain cleanings. If I couldn't find Dumonde tech anywhere though, I wouldn't hesitate to buy Prolink or Rock N Roll Gold instead - all are good products.