But it is uncertain just what tools aid translation. Some producers argue that accuracy is still the best guarantee. If a producer or audio engineer is listening to recorded tracks and mixing tracks using a "flattering" monitor speaker, they may miss subtle problems in the mic'ing or recording quality that a more precise monitor would expose. Other producers feel that monitors should mimic home audio and car speakers, as this is what most consumers listen to music on. Still more believe that monitors need to be relentlessly unflattering, so that the producer and engineer must work hard to make recordings sound good.