OK, I bought one and just tried it out. To be unbiased, I shaved one side with the vibration on and the other with it off.
Um... I don't think I like it.
I'm used to fealing the blade against my skin. I can tell by how hard I'm pressing and the feel of the razor cuting the hair if I'm cuting the skin (ouch) or the hair itself. With the vibration turned on, I couldn't tell how hard I was pressing- therefore ended up cuting myself more on the side with the vibration the the side without.
Overall I have a better shave on the side with the vibration turned off.
I'm not going to give up now though. I'll give it a week and report back to tell if I've gotten used to it.
If I haven't goten used to it by then, I may see if my girlfriend likes it (
)before I take it back.