I have used horiz. offsets, gas verticals, and now a large BGE.
I really have come to love it. However you are limited on space. A nice fix for this is the dual grate rigs you can find on the web, I really need to get one. I find that not having to refuel every 1 1/2 hours is nice but I do miss tending the fire more. If you over shoot your desired temperature it will take a while to get back down to range as it really holds the heat well.
I did 10 blocks of cheese last night on mine for around an hour. Came out excellent per the people at work who ate around three blocks today.
It also creates, for what it is worth, a very nice smoke ring (I know it is ego on that one).
They have a pretty antiquated forum at:
The Big Green Egg Users Forum
Lots of good recipes, advise, links to external sites that have all sorts of help.
I'm going to pick up a few Boston butts tonight on the way home for the OSU/Michigan game this weekend. I have a few buddies coming over and they all requested pulled pork loudly
Also look into T-Rex on the BGE forum, what a trip