Whose mind is better? Contrast Descartes’s view of the mind with that of Hobbes. Consider their accounts of thinking, imagining, dreaming, and willing.

This is a great question! There is no definitive answer, as both philosophers deal with theories of the existence. Certain modern-day philosophers lean toward Descartes, while others view the mind and existence in a way that is more relevant to Hobbes's arguments—ultimately, it comes down to how one perceives the mind and living creatures.
Descartes is recognized predominately for his theory "Cogito, ergo sum," which translates to "I think, therefore I am." In other words, the fact that he is questioning his existence means that he cannot doubt that he exists; he must exist, because he is questioning his existence in the first place.
Hobbes similarly deals with human existence, but he focuses on its relation to other beings. He argues that the "natural condition of mankind" is what existence would be like if there were no structures dictating the connections between other human beings (e.g., government, civilization, laws). He concludes that an individual's life, in a state of absolute nature (lacking other human connections), is a short and meaningless life. Individual thought means nothing, essentially, if an individual cannot interact with other human beings.
When comparing Descartes and Hobbes, it is difficult to compare which set of theories is better, because they deal with different circumstances of existence altogether. One focuses on existence of the self, while the other focuses on existence of the self in relation to other human beings.