James and I compared his ultra to a helix and the helix was a little better. Not massively so, maybe 10% for amp sims (if that's even quantifiable). Fx wise it's easier to get interesting fx out of the helix. The fractal probably has more options and I think overall fx are better. Helix fx are based on existing pedals, so if you want for example a delay with chorus on the trails, just find a chorus delay effect. If you want the same in the ultra you'd have to make a parallel chain, with a 100% wet delay followed by a chorus block etc... It takes more work to get there, the helix is quicker. And an LT will cost about as much as an ultra and come with a warranty.