I am a field support rep for Alti-2 - I provide field support for the Neptune specifically, plus I have replacement parts for the other altimeters.
In response to backing a product - I have had two Neptunes belonging to skydivers that I was not able to update the software, and Lara, Roger, and the peeps at Alti-2 replaced the faulty parts at no cost.
I own two Neptunes, one of which I use strictly as an audible, and to test the Beta software.
Jesse