I have not personally, but two friends switched to it and really like it, I think they got the two blade ones. Gillette blades are expensive.
I think I'm gonna try it...replacement blades for the Quattro or whatever the I have are such ripoffs
The blades are ok. They don't seem to last if you need to shave constantly like I do. I have a beard now because my lady friend digs it so I don't use mine. They'll get the job done but they won't really change all that much but maybe the price.