Originally Posted by
seanp7
Correct, but the statement was that UA has the best J club in North America. I was genuinely asking if AC's facilities are better (I haven't been to the Sig Suites).
I would have actually wanted to answer your original question myself, but I didn't have the chance to visit the Signature Suite Lounge neither (my award tix was good enough for the Polaris Lounge, but not the SSL at YYZ when flying INTL AC metal)
All things being equal, I would prefer the Polaris Lounge for their more liberal entry policy (of course, some will grumble that it has lead to overcrowding).