Ignore the DI out ‘issue’. A TRS to XLR cable works just fine and sounds great.
What about Pod Go? It is cheaper, includes a foot pedal flute volume/ wah, and sounds identical to the helix! There is limited DSP so you have fewer slots and you cannot do side chaining/ two amps. However, the price point means you and your son can both have one. You can comfortably replicate your current setup of Sansamp etc, and the six foot switches give you very easy interaction at a low price.
What about Pod Go? It is cheaper, includes a foot pedal flute volume/ wah, and sounds identical to the helix! There is limited DSP so you have fewer slots and you cannot do side chaining/ two amps. However, the price point means you and your son can both have one. You can comfortably replicate your current setup of Sansamp etc, and the six foot switches give you very easy interaction at a low price.