Is there a cobo unit (Helix 7 preferrably) that has DI,Regular Sonar, and GPS or is it DI or Sonar and GPS?

Is there a unit that uses a full size SD card and not the micro SD Cards? I see me very easily fubling a micro and ti being lost forever when I try to get into the adapter.

How does/do the Helix units compare to the XX8 units in terms of clarity and bang for the buck? In other words a Helix 7 with DI and GPS is comparable to what XX8 Unit(s)?