Hi,   First, to answer your question about the HX Stomp. The unit contains the exact same models of amps, cabs and FX that the full Helix and LT versions come with, the difference with the Stomp is that it contains only one Digital Signal Processor and the big boys have 2 DSP. This limits the Stomp only in respect of how much it can handle at one time, but it can still be your entire guitar rig in one box. Stomp has a limit of 6 simultaneously usable blocks whereas Helix has 8 per path