Welcome Hexe.
The only difference is the size, and as you know that matters.
Consider onboard gas and scrubber capacities, if you like it deep and long bigger is better.

If you mostly travel do the occasional deep dive the Evo is more than sufficient.
Last but not least, whichever unit fits you better. You neither want the Inspo to roll along on the valves,
nor the Evo digging into your lower back.
