go for mazda 6 if ure rich enough that can face the resale value in malaysia, otherwise go for accord/camry for higher resale value.
parts and maintainance of mazda 6 is slightly higher ofcourse.
Mazda 6 looks much nicer than accord/camry.
FC is almost the same.

conclusion, go for mazda 6 if ure really rich and dont care about the resale value and maintainance fees.

if u want jimat jimat then go for accord/camry for sure.