I'm currently on a pendulum that swings between "No deal / crash out" and "Brexit will be cancelled" (roughly every three hours, or depending on what article I've read last).

I don't think there's time to negotiate anything that might be described as a "good deal" any more (assuming such a thing was ever possible... and I have my doubts about that). And whether or not the UK crashes out or cancels is entirely dependent upon the internal machinations of the tory party, the whims of a handful of DUP MPs, and the deep and mystifying apathy of Corbyn's Labour Party.

So basically... flip a coin!