I currently use a 300G with a bit of lead tape on it, but I think it is still below 11 oz. I am looking at some rackets that look like they would be good, but they are at or around 12 oz. Does anyone think that an ounce or more weight difference from one racket to another is too big of a jump? I just don't know if I would be able to handle and maneuver a 12 oz racket well enough. Anyone else increased weight so much?