I don't think you'll like the odor that comes with the Protal, not to mention the much needed breaking after it's absorbed. It is the cheapest in the ranks so I guess that stands for something.
If your looking to save money, the Pro Plus oil is just over a dollar cheaper by the quart. By the gallon your back up to Super Softs price, so you just as well get the better oil for the same money.
Pro Plus is good oil, but it is mixed 2to1 with water. That benefits the duration of your supplies and the amount you can do with it. But I think your swapping volume for quality there.
Also the watered down aspect of it, I found required double oiling on anything thicker then a bobcat.
One more pump for Super Soft...
This oil requiring to be applied straight increases the drying time, but lessens the amount of breaking required.
The slower a hide drys the softer it will be..1
And 2...your applying a lot more oil by not watering it down first, which multiplies the effects were oiling to begin with.
I can apply Super Soft to a hide and walk away. Pro Plus, needs to be tended to soon after because it will dry quick and require more breaking as it does dry.