I love mine. The optical pickups really do capture the voice of the bass better, and you can use any string material, even Bronze!
I find the Lightwaves to be extremely sensitive to touch, and the piezo system is one of the most sensitive I've ever played. So, if you are percussive in your playing, it will hear that as well. More then viable alternative. Lightwaves also have some of the thinnest, fastest necks I"ve ever played!
Endorsing Artist - Petillo Masterpiece Guitars, J. Backlund Design, Vivid Amps, Fuchs Audio Technology, Bitchstraps