Keep your cobblers
I too have plenty of current experience on Boeings of various sizes thanks and yes, I've witnessed the AFDS transition into incorrect modes on the odd occasion. I have not, however, had the pleasure of seeing my aircraft transition from steady state cruise in PATH or ALT to a sudden 20 degree+ nose down descent at a rate that put people on the ceiling. Couple that with the Airbus exceeding several of it's much-vaunted protections all at once (over speed, G limits, pitch rate) I'll just refer you to my original statement.
Yes, BEags, I'd accept new-technology physical problems (lithium batteries) over weird computer controlled autoflight/flight control behaviours any day of the week.