I always go to the low setting, otherwise know as “extreme smoke”. The recteq goes from 200 to “low” on the controller. Low usually runs right at 180. It does give me the most smoke flavor for my cooks. The only reason I say overnight is for brisket (maybe butts too) due to how long they take. Pretty much everything else I cook during the day but still go to 180 to get the best smoke flavor. Many times once the IT of whatever meat I’m cooking reaches 120 and stops taking on smoke I bump the temp up to anywhere from 250-325 depending on what I’m making to speed up time.
Some of the high(er) end cookers like the Yoder and MAK may not need to go that low for good smoke but the recteq does in my opinion.
Here’s a link to my first brisket cook. Turned out amazing! Probably my best yet!
https://www.bbq-brethren.com/forum/showthread.php?t=289011