Interesting to hear what works for people. I think it totally depends on the situation, i.e. if you're both financially literate, responsible and, as a couple, financially healthy. If one of those is out of whack, that could definitely lead to problems if not addressed somehow.
My only tip is to talk about it -- money is a dealbreaker and I believe it can definitely screw up a marriage beyond repair. I think I've been lucky as me and my wife are more or less on the same page (avoiding most but not all disputes), and we're both living comfortably based on our income (always being tight for cash is likely a big stressor on marriages).
Lastly, I've never been good at budgeting so having 3+ different accounts and money getting transferred all over the place would never work for me. Now, with a single income, it's easy as my wife just puts everything on her credit card and I get to pay it off each month
