When it comes to expressing a contrasting point of view, "but hey..." is a useful phrase to indicate that what comes next may seem contradictory or unexpected. However, there are many other synonyms that can be used to convey a similar message. For example, "on the other hand," "nevertheless," and "nonetheless" all suggest that a different perspective is about to be shared. Other options include "although," "regardless," and "yet." Each of these phrases conveys a similar sentiment to "but hey," but choosing the right one can help to clarify your intended meaning and make your writing or speaking more concise and effective.