I use a Helix LT as platform for bass, live as well as in the studio. For a couple of years I switched back and forth between modeling/multis and a fully analog pedal boards. It is astonishing what progress was made in terms of technology over the last years. Some years ago, modellers (Pod XT, Boss GT10B..) mean that you lose sound quality in exchange for flexibility. But nowadays, the loss of sound is near to not existing.
After two days I was capable to reproduce the sound of my former analog signal chain (Darkglass Compressor & Preamp). Ok, there was still a difference: The Helix was less noisy O_O
What I like best about the Helix is the parallel processing, the possibility to add EQ/Compression wherever I what to shape the sound and last but not least the great usability to handle the feature overkill.