Henry, my apologies, I didn't see the request for BGE feedback until just now.
However, to concur with Galaxy Flyer, they're outstanding. I have two "larges", which is actually the same size as the "smaller" Weber kettle at 18".
I worried it would be too small, hence I bought two. I needn't have bothered on that score, it's big enough. However, it is useful to have two of them so one can be smoking ribs all day long, the other for hotter temps.
Having been a BBQ fan for the last 25 years or so, I didn't worry too much about the cost, I knew what I wanted. I paid quite a bit more than Galaxy Flyer, about $750 each. Worth every penny.
My family now slathers at the mouth when I come home with a rack of ribs ready to cook the next day.
Beer-brined and butted chicken is rather excellent too.
The amazing thing is that it uses sod all fuel, and leaves very little ash.
The one thing I've struggled to master yet is steak, that either gets too charred outside or is under done inside. I'll keep persevering to get the right temp.
The family's eaten like royalty since I got these things!