I've used a Nitty Gritty 2.5 since 1986, together with the cleaning fluid supplied by NG. I've had fabulous results. My routine is to clean each record once with the Nitty Gritty (sometimes, in the case of a really gunked up LP, twice). Then, both before and after each play, clean the LP with my Audioquest fiber brush. No problems with the LPs, *and* my stylus stays very, very clean.
Robert
Robert