Too much to be very useful.
I think I've finally realized that I don't really like lonely planet guides. They try to be something for everyone and while there are some clues to what you're getting yourself into, a guide that includes both places for raves and early bird dinners, just has too much for me. It did provide one good tip for live music, but I probably could have gotten that easily some other way (online, asking locals, etc). I recommend Frommers 3-day guide and Eat.Shop.Montreal for a visit. It does have good maps, though, and it's very thorough. It also has a nice consice history of montreal and culture description that did enrich my visit, but again, you could get that from wikipeida if you took the time.

August 2008 Trip
Went to Montreal for the first time in August 2008. This guide does a great job of letting you know about activities off the beaten path. For example, every Sunday in the summer there is a drum jam by the University in a park by the hill (it's called the tam tam jam). It's like Woodstock and totally made the trip for me. No other guide book discussed it, but this one did.

Highly Useful Guide Book
I find Lonely Planet guidebooks the most practically useful of all travel guidebooks. I find the Montreal/Quebec City to be definitely no exception. Just the maps in the book make it extremely worthwhile...no other maps are needed. Interviews with Montreal/Quebec City residents provide informative and real insider information about the cities, as do sections on history, culture and the arts. Information is adequately up-to-date. I highly recommend this book for anyone making a trip to one or both of the cities.

Very good
This guide was invaluable during my recent trip to Montreal- the maps were great- having the reviewed places marked on the maps made life a lot easier. I just wish it were bigger.

Helpful Guide
This guide proved to be very helpful, informative and insightful for my recent 9 day trip. Nicely organized and up to date material.