Thanks for the welcome!
I'm set on the 901 as my first purchase. I'm actually pretty excited about the whole thing, even blown away by the fact that there's a sub-culture around vaping. So I will certainly be purchasing different models and styles of PVs over time, but the 901 looks like it will be a good jumping in point for me.
I put a post on Facebook the other day asking people for recommendations on PV brands they've used. I got several recommendations, but at a party yesterday a friend sent me up two "minis" to have. I was excited. I haven't broken them down yet or played with them much to see what model they are exactly.