Here's my overall answer: very good. Better than the season before.
Some standout memories:
Bowmans had some terrific opinionated numbers on halfs and quarters at times. Some Sundays there would be about 5 different numbers so unusual I would have to do triple-takes to believe what I was seeing. Some Sundays I would find basically nothing there but overall, they were a top book for me this NFL season.
I got a lot of use out of 5 Dimes special reduced-juice prop lines which they post for all the big games (meaning any game that isn't in the two main batches on Sunday).
I just got into Mansion a short time ago but what can I say: WOW! I don't know if that business model can sustain - and for that reason I'm not ready to give them a full endorsement - but wow.
It was worth keeping an eye on props at CRIS, DSI, Las Palmas and BetonGames. Those are the ones I found most likely to be pleasantly out-of-whack.
Software/systems that repeatedly annoyed me: BetonGames, Skybook, Legendz, Royal.
Website layouts that repeatedly annoyed me: Intertops, BetonGames.
Books so consistently solid overall for NFL, it doesn't even stand out any more that they're so good. It's just day-to-day excellence: Pinnacle, Olympic.
That's what comes immediately to mind for me.