I recently came back from LAX on Air Canada's "Rouge" service. I normally prefer AC over UA and Westjet etc because of the E90's 2x2 seating configuration. AC has since removed the E90 on to other routes and replaced it with the Airbus 319.
Not sure how many of you have flown on Rouge service routes, but it's mostly a 3x3 seating config and pretty bare bones with no entertainment (if that matters to you.)
They offer an in-flight WiFi service where you log into their wifi network on your phone, laptop, or tablet device then stream content from there. Kind of neat, I suppose. Make sure you bring headphones and that your device is fully charged! There are no USB or power outlets for you to use. If you want to watch the movies and don't have a device, iPads can be rented for $10, but most of their flights are < 4 hours or so, so it's not a big deal.
One thing that is different is that the service staff are much younger and upbeat so it was refreshing. I wasn't sure what to think of it during my first flight but on the return trip home, it was great. You can really see them going out of their way to make passengers happy.
Oh, and just a pro-tip - LAX Terminal 2 is undergoing some renovations or repairs so it can be a bit noisy and an eye sore if that matters to any of you.
I got thrown to the back of the plane unfortunately so c'est la vie (no big deal, really.) Here's a quick shot of what the seats look like.