Well your right but sitting in GC and trying to figure out if you like a di/pedal or not is kind of stupid. Where are all these places where you can extensively try a piece of gear and figure out whether or not it's going to work for you without actually taking it home? Not to mention most places have a return policy for just the reasons you're mentioning. So it only makes sense to buy it, try it, and return it if it's not up to your standards.