Aenima is a great album. The songwriting is incredible.
Lateralus is also incredible. They fully moved away from there earlier influences,and close to any of what might be heard on there first releases, and undertow.
10,000 days has its moments, with good songwriting overall.
some riffs however are poorly arranged into the song or simply arent that good.
Undertow is also sufficiently awesome. But a different league.
all TBH,
but to actually answer...
my favorite album is Lateralus. But they each have there good qualities