I'm far from being an engineer, but I can code a bit and have an engineering-adjacent role, and 3.8 27B "seems" -- purely subjectively -- miles ahead of 3.6 for the medium-difficulty tasks I give it. In particular, it's only started looping once in the 2 weeks or so I've had it. 3.6 did so every day.

I normally run with thinking low but it's still miles ahead.

I had been annoyed at not being able to run 0731 locally, but now I'm not sure I need it. I think I could leave 3.8 running overnight without waking up to find my office sweltering at 80F and seeing eternal loops on my screen.