Yeah, I agree from my experience with Boas and what I know of retics.
I have zero interest in retics because of how active they are and how big they get. Not the combo I want. My corn snakes give me a workout at 4FT and thin.
Both my boas have fallen asleep on me and often. If I had a dollar for everyone my Ghost BCI Female, Behira, fell asleep on my lap, I could pay for her tank!