I got this pack for my practice kit so I could practice in my living room without being a pain to my landlords, which live over me in the same house.
They feel really bouncy, and the sound, while low, isn't really a cool "sound" in terms of using it for anything other than practice. There is differences though, but not enough where I would use them at a low volume/acoustic gig.
As far as bounciness, they don't feel "natural" in terms of toms. They don't feel bad, they just feel a little bit off if you're used to normal heads on acoustic drums.
That being said, this is a great product for low volume practice! I've used them for a couple of months now and it can definitely help you with rythms, chops and stuff while not disturbing neighbours/parents/residents of the house. I definitely recommend it if you can't practice because of the loudness.