Your comparison is quite out of league...Kia and Optra, Chevy
and Mistusbishi....anyway forget about Kia, Chevy, all are Korean
brands, Chevy now rebadged, formerly Daewoo...
Mitsubishi is better finished in built and cabin layout. Mazda also
has an exciting range. Its 3 and 6 series is good. What about
Honda? Civic, Jazz. Toyota's Altis, Vios? Subaru?
Depends on what you want. Is it Comfort, performance, economical,
conservative styling or futuristic? We are spolit for choice
nowadays and car price is the lowest in the recent years. Take your
name to test drive as many cars as possible. Don;t just look at the
xterior, examine the interior layout, the type of material used,
accessories, storgae box, etc etc....the interior is where you are
when you are driving and it has got to feel good.