Guys,
Don't worry - the big difference I have seen between Nxt and the others is that:
i) It *doesn't* have VC capital backing.
ii) It *doesn't* have "slick sales guys*.
iii) It *does* have smart devs and an increasing following.
iv) It *is* delivering its promises (more or less) on time.
There will always be "the next* conference - stick to what you're doing well - people are watching this space with interest.