It's not a Helix, but there's two primary advantages. First, it doesn't cost the best part of $3k. Second, you can buy this and not become one of those 'Helix People', showing up at every reasonable discussion about guitar amps or pedals etc yelling at everyone about how good modelling these days is. As Mazda say, Zoom zoom.

Model: Zoom G5N
Made: China, recent model
Serial: B76007238
Type: multiFX/modelling
Power: standard 9v negative supply, not included
Switching: true bypass
Mods: none
Accessories: original box, no power
Condition notes: used, no major marks, fully functional. Overall: very good condition