I watched Tom Horsman's review of it a while
back and he was less than enthusiastic.
I recently pulled the trigger on a Vortex and I'm still on the fence about it.
I don't regret buying it, just not sure if I needed it.
I've now got a Slow-N-Sear, a Vortex, and two sets of the Weber charcoal
baskets, and I find myself using the baskets more than any other accessories.
Concerning low and slow cooking, I've decided I'm getting a dedicated smoker for that.
I'm not into charcoal-smoke flavor, and every time I've cooked
low and slow on the Weber everything just tastes like charcoal.
I'm chasing wood-smoke flavor.
In conclusion, the Weber Heat Controller doesn't seem like something
I need, but maybe expound on its useful attributes if you would please.