I really don't know how one can compare one good fluid with another. Every record has a unique buildup of grunge on it and there's no way to really tell which cleaner is going to be able to best deal with it. Also, if you clean with one fluid and the record is still dirty, but the other fluid cleans it up, how do you know that it just wasn't a second cleaning that did it? All this aside, I've used AI#15 and it's very good stuff. I also like the other AI fluids, but I'm not nuts about 3 and 4-step processes. Frankly, if a record is not too dirty, I have no problems with Nitty Gritty Pure2, which is a 1-step fluid. Works fine, IMO.
