This stompbox modeler from Line 6 has improved my playing significantly.

The line 6 M13 is the ultimate solution for guitar players. If you are anything like me, you like to use a lot of effects and stompboxes to add some colors to your tone. Since I purchased the M13, my stompboxes are collecting dust in their original boxes. This stompbox modeler from Line 6 has improved my playing significantly. I like to use the 28-second looper and practice scales/modes behind a rhythm track. The delays are fabulous sounding, and the filter effects always bring a smile to my face. I have used it at home and for live shows and have had no major issues or complaints. The effects are color coded, which makes navigating much easier when flipping through the different scenes. The different I/O options are great for guitar players that use an FX Loop. The metal chassis and switches make this unit very durable which would be a benefit to a band that is always on the road. Overall, I would recommend this to any serious guitarist that wants a lot of effects.