I remember they were very popular around here.
to me it doesn't. A bit of a better quality here, a few better graphics and ease of use, seems like part of the same path to me. And the Voicelab I had before that, pretty much the same.
I have the helix HX, fantastic for guitar, not necessarily blown away by it though. I guess for recording it is good, for gigging, not really much difference (not the stomp, I couldn't really gig that so easily due to the buttons). The only place it really does shine is the looper, having individual buttons for everything and it seems to really work well for that. If it wasn't for that I would probably put it back up for sale and stick with the B3 for live use, and for recording i have Bias Amp and Bias FX on the mac, which are fantastic.