I’m not sure of your budget but an insulated cabinet smoker might be worth a look. There are a lot of different companies but lone star grillz has a decent video of them. Most of them can be fitted with a blower / temp controller if you like.
https://lonestargrillz.com/products/...ulated-cabinet
Regarding offset cookers, I think they have the best flavor. I have a crappy $400 one that makes great food but I have to feed it every 15-20 minutes and it leaks like a sieve. I have cooked on lager ones that seal up well and have good draw, I had to feed them about every hour give or take.