Originally Posted by
reddevil0728
If there is a strong desire to fly only Star Alliance airlines, and on that international route there are only two choices, Air Canada or United Airlines, which will be "better" in coach?
Depends on the aircraft, as they have different seating configurations. In general, AC has high-densified most of its long-haul fleet, whereas UA has only partially done that.
Depending on where you're starting/ending, there's also the issue of transiting another country. It's an added hassle, especially if you're Canada based, because the US transfer is a pita (Canada no picnic either).