Yeah, I really miss not having a smoker.  I almost bought a used MES this past winter off Craig's List.  The guy was even including the wood stand he built for it which was sweet !!  He had about $100 worth of lumber tied up in just that stand.  But then I realized I wouldn't have anywhere for it since I already have my grill on my front porch and I have no garage.  OH WELL...
And I'm having a heck of a time getting used to the gas 
Char-Griller temps.  It has a therm in the hood, which I've read many times not to trust.  But my Maverick internal grill therm's ceramic thingy on the probe disintergrated so I don't have that to use (a replacement costs nearly as much as a new unit !)
So for the time being, I've been using an oven therm inside the grill, but then of course you have to open the hood to read it.  There is about a 10 degree difference between the two and I'm guessing that's cuz the oven therm is sitting next to the heat source whereas the hood one is reading the internal temp of air in the grill.  So all in all, I guess it IS fairly accurate. 
And you're right about the temp of 145* to 150*.  That seems to be the general consensus in most of the recipes, too.
Bonnie