The phrase "most perceptual" is used to describe something that is easily perceived or noticed. Another way to convey this concept would be to use synonyms such as "most noticeable," "most obvious," or "most apparent." These words all indicate that something is readily discernible to the senses. Other terms that could be used include "most striking," "most prominent," or "most conspicuous." When trying to convey the idea that something is easily observed or detected, it is important to choose words that are clear and descriptive to avoid any confusion or ambiguity. These synonyms provide a range of options to choose from based on the specific context and tone of the writing.