This is preference on my part, but I'd pick the Pi's or another high-eff speaker over something like these any day of the week. In making the low-eff speakers, the boxes are small, and the "woofer" is not really a woofer- the low efficiency comes from suppressing everything else in a major way to get to it even with the tiny amount of lower frequencies. Why get a good amp if you're going to do that to it? IMHO, you lose all most of the dynamics and quick response you get with something like Pi's. If it's all youv'e ever heard, though, you may like it better. Best thing would be to find someone in your area with some and check 'em out, if you can.