Does anyone here see something I'm missing?

Not really.

Is the Lowrance the way to
go?

Well, the Airmap 600c is also interesting, IMHO. The 2000c is bigger,
with a larger screen at the same resolution. If size is no problem, the
2000c is it.

And the EKP?

Largest display of them all. Very large. Huge. If you're into that, it's
the one to go for. There's also a smaller unit from AvMap called
GeoPilot Plus - is that offered in the US? If so, it can be made into a
turn-by-turn street navigator for a fairly low price. No battery in that
unit, though.

--
Thomas Borchert (EDDH)