Best to ask at DIYMA. Tons of people there have used both with great success. Both have their positives and negatives. I have a Helix V1 sitting here but haven't dug into the software just yet since it is just sitting on the shelf for now.
Plus there is some other DSP's out there they know of as well that may work. And their classified section is always selling a ton of stuff including sometimes NIB DSP's from Helix and Audiocontrol and a few other brands.