When Line 6 first came out, it was a monumental feat of solid state digital amps. They could take guitars and basses, with killer tones and resonance. As time progressed, found that I still wasn't fully feeling that it was I was looking for. I utilized several foot pedals in from Horizon Devices, the Apex and Precision Drive, which cleaned up the noise and beefed up the tone, and would allow me to dial in to personal specifications that became my own sound.
Within recent years, Positive Grid Spark amp came along with 2 10" drivers, blowing me away how loud this little thing was. Alongside with all the apps and flexibility. Now they're releasing a cab, that can be daisy chained to limitless cabinets and modelers.
Think it's time to let go of the Line 6, and stick with the Positive Grid.