ultrasonic

[InTheZone]

Question for Shannon or experience's user:

Is it possible that Ultrasonic works better with some people than masked version ?

I feel that for me, when I use ultrasonic I feel different from masked version.

I mix it up and believe it gives me better results. It doesn't take a bunch of time with both but every week I spend a few hours on ultrasonic while I'm working on something at home. The rest of the time I spend with trickling stream.