Recently my bass has been virtually unplayable. When I was playing down on the first three frets it would rattle so badly that it sounded as if I were playing a ghost note. So I had my bass checked: no problem with the neck, nor the nut or bridge. The guy who examined says I should change the strings because they are too loose; he seems right. When I pop the G string i can literally take it an inch away from the bass, very floppy. So this is what puzzles me... The facts: heavy gauges are generally more taut and have higher tension, whereas light gauges are more flexible. On the other hand, heavy gauges are thicker and light gauges are thinner (duh). The problem: I like to set my action as low as I can without buzz, which calls for high tension strings, right? I would naturally go for the heavy gauges... but then again if the strings are thicker they'd be closer to the fret board, and consequently bringing higher chances of fret buzz (especially the E string where 90 and 105 are a huge difference). I really don't know a thing about strings, so I'm asking everyone for some advice. Which is the way to get as close to the fretboard without any buzz? Otherwise, what strings do you think are the best reducing fret buzz?