I have a love/hate relationship with the Centurion Lounge. While I really want to like it, the capacity issues are super frustrating (especially with the Memorial day 90 minute access restriction that made the lounge useless for my 11:30pm red-eye.) Half of the time it looks like a refugee camp inside, and recently it's been 60+ minute waits for a shower. What good is a lounge that's a crapshoot?
The SkyClub is far and away the best lounge. Always plenty of space, the bathrooms are massive, it's spotless inside, has a killer view of the mountains, has the best food options, and has rows of shower suites that are really swank. Whatever it lacks in decor or top shelf liquors it makes up for by having its stuff together.