I have not used the Pro Plugs yet....but I will be trying them out. If I do two or three dives a day I am generally fine. But having discovered liveaboards and the joy of jumping in the water five times a day...I've also found the agony of having equalization issues and usually shortly after the trip, an ear infection.
I tried the PRO EAR mask and it did a great job when it was working. The issues I had with it were as follows;
1) If you don't get the seals perfect they flood (user error)
2) I usually automatically clear any water from my mask by exhaling thru my nose periodically. With the Pro Ear mask you have to pinch off the hoses that go to the ear cup in order to clear the mask (although clearing the ear cups is very easy), this requires both hands. I also record video while diving (talk about task loading, dangle the camera, pinch the hoses, clear the mask, retrieve the camera, where did that cool critter go?). Now imagine a night dive....I use a hand held Light Cannon for illumination, which you should never dangle (my poor dive buddy was blinded twice, that was when I decided it wasn't for me)
Back to topic. I saw another diver using the Pro Plugs on a liveaboard and after talking to him, they appear to be a simpler and more effective (and cheaper) solution to my ear problems than the Pro Ear mask. I'll get back to you after I put this to the test, probably Novemeber.
Jeff