I've lived in Rome since 1984. I've been going to some of the places on my list pretty much since the beginning; others are more recent openings, or newer discoveries.
The main criterion for inclusion here is that I like the place. This could be because of the food, or the service, or the wine list, or the atmosphere, or because it offers good value for money: more often it's a combination of these and other factors.
It may come as a surprise to see two local trattorias at the top of my overall rankings, alongside Rome's top gourmet restaurant, La Pergola. But that's because these scores don't follow the classic gourmet guide criteria, which put culinary excellence above all other factors. An excellent trattoria deserves to be ranked as highly as a Michelin-starred gastronomic temple, if it does what it sets out to do brilliantly: to offer genuine, local food and good wine in a congenial setting. And value for money always counts for a lot in my book.
But I'm just one person, and I can't try out all these places every week - so if you've had a bad (or indeed an exceptionally good) experience in any of my recommendations, please let me know by sending in a comment.