Took the plunge and offered to buy a barely opened and used Darwin here on ECF, so provided that deal works out I'm set.
Amazing, amazing choice.
You are going to be blown away (or at least I hope you are).
I started out using PVs back in early-mid 2009 and gave them up right as 2010 started. Took up smoking again halfway through 2010 and a month ago ordered a Darwin as my first unit coming back and I've been off since.
It's truly amazing and consistent.
My favorite aspect probably is the battery life and how I don't have to lug around a ton of spare batteries and chargers. It's a truly awesome unit.
Brandon