Hey Jar head!
I jump with a Neptune which has been flawless for the past year. I love the logbook, intuitive buttons and the large display. The fact that it is waterproof hasn't been an issue for me yet, but when I start swooping this Spring I won't have to worry.
Alti-2 will be coming out with something new at the PIA this year so I can hardly wait to see what they have done with an already great skydiving tool.
By the way, the firmware is totally upgradeable so don't worry about being left behind when they upgrade, they will fix yours for "free".
Doug Douglas Henault
Vancouver, BC
604 620 3338