Over the past 5 or so years I have noticed "previously safe" registrars (in terms of resistance to false abuse/DMCA complaints or social engineering attacks) get acquired by larger corporate interests and sometimes have a drop in quality as a result. MarkMonitor was acquired by a venture capital firm a few years ago as well. Good to have backup options on the table.
(Before you ask. I am aware of the added costs of such services, and I don't have much faith in consumer registrars anymore.)
There are no great registrars, just registrars that suck less. I recommend Godaddy to no one.
Surely there are more abuse hardened registrars than these two.
I do agree about the sorry state of domain registrars these days.