Mitsubishi has been manufacturing high security anti theft systems which are inbuilt into cars manufactured after 1995. But the latest Mitsubishi cars have hi end precision coded chip keys that not every locksmith in Chicago can replicate. There are only a select few locksmith services that have costly state of art technologically savvy equipment to do the quality transponder key cutting and coding machinery.
There is no need to invest a lot in Mitsubishi parts especially if it is not required. That is one big advantage of using Mitsubishi....