I dont have any issues with my fractal sounding thin. Does it sound different than an amp cab sitting next to me? Yeah... but if I took that same cab and mic'ed it, the mic sound would sound different than the amp sitting next to me.
I wanted to love the helix, I really did but I struggled with it, the more I tweaked the worse it sounded for me. I know the fractal is "harder" to edit, but I dont have to edit that much. If I want to build a patch after I select the amp and cab, its already most of the way there in its default settings, add whatever effects I want to add, that takes care of probably 80-90% of the sound I am after, the rest is small eq tweaks, or try a different cab or IR. You could most definitely get lost in the amount of stuff you can edit, but I havnt found a need yet to get that deep with it.