I've done as much research here, on Egullet, elsewhere on the Web and in the infallible (IMHO) Osterie D'italia as I can think to do, and here is where I am coming out for an end of September trip (pre-truffle season). We've spent a lot of time eating through many other regions of Italy over the years, but this will be our first trip to the Langhe.
In general, we prefer traditional style cooking, albeit in places with warm (don't care whether it is casual or formal) service and a good wine list. Price isn't that important, but value is. Hence, I've had to make some tough choices (e.g., no Piazza Duomo or Ciau del Tornevento, or even the version of Guido at our hotel in Santo Stefano Belbo), but I would love to hear from the group about the following, and I've noted in a few places where i feel like i have not been able to get an accurate read on the place from my research. Also, we tend to may make lunch the larger, grander meal, but of course will adjust to suit the establishement.
Lunch - Boccondivino in Bra
Dinner -- del Belbo da Bardon, San Marzano Oliveto/Valle Asinari
Day 2 --
Lunch -- Marsupino Briaglie (after the morning visiting Cuneo)
Dinner -- Lalibera , Alba
Lunch Vignaiola, La Morra (or should we choose I Bologna in Rocchetta Tanaro, or Bovio in La Morra? --see day 4)
Dinner Antine - Barbaresco
Lunch -- Il Centro, Alba (here is a one that i have not seen recent reliable posts on; back a few years ago, many posters loved it and other thought is might be riding on its laurels; would love to hear from anybody who has visited it lately.)
Would we better off at the new Bovio ristorante in La Morra (the former operators of the Belvedere)?
Here is a glowing review i found
DInner -- Tratoria della Posta, Monforte d'Alba