What is your overall opinion of this product?
When comparing all its attributes with other multi effect units, this is the best value in the market. I use it with the four cable method. It allows me to keep my amp's lead channel tone while routing the time, modulation, and reverb effects after the preamp through the effect loop and the distortion and wah effects before the amp input. The beauty of it is that you can have the exact tone that you want with the push of a single button without having to do a ritual dance before a solo. The only down side is that it does not change your amp's channels. However, you can get a great clean sounds using the unit as a preamp and bypassing the guitar amp's preamp with only the push of a button and using the 4 cable method.
The only two things I would improve would be a better display for the preset names. 8 characters are not enough most of the time for specific preset names, however, it enhances your creativity in naming presets. The 2nd to make it change the amp's channels.