The better DIs offer one better tone shaping, yes. But that's not just by mere virtue of "more bands" that you can alter, but also by the quality of their circuitry. Some boxes, despite having bands to adjust, simply sound "bad" or "harsh" ...that's due to how their designed/built so yes, one may sound better than another, while others may sound just as good. Let your ears be your guide.
But another thing you get with a better box is silence. A good box not only does
not add any noise, it isolates potential bugaboos like ground loops or interference (say RF). Dead silence at volume is a one sign of quality, IMHO.
FWIW, in my experience, the PADI and Venue were equal in "quality" in that both were dead quiet under varying circumstances over different guitars and shaped tone well; thereby being equal in that respect, so I liked both. But I simply prefer the Venue (and sold the PADI) because of the extra bands of tonal adjustment (and I like having a mute and boost switches ...the tuner is hideous). Just sayin
Edward