I did the couple's match, and the one thing I can tell you for sure is that it's more stressful and more expensive. At first I thought it was going to be a bit easier because we both have pretty good grades and I was the one doing a less competitive field. But during my interview trail, I found that I liked a lot less programs than my spouse did. Those that turned me off were still descent for him, and the ones I liked were ultra competitive for him. So, we had some tough choices to make when making our ROL. But in the end, things are looking good. At least we both matched, so we don't have to do a Couple-Scramble. I can't imagine what that's like.
Good luck on your couple-match adventure.