There cannot be subjective standards of personal taste and comfort when determining a promisee's performance.

Contracts sometimes provide that a promisor's duty to perform is conditioned on his personal satisfaction with the promisee's performance.In determining which standard of satisfaction to apply,courts distinguish between cases in which the performance bargained for involves personal taste and comfort and cases that involve mechanical fitness or suitability for a particular purpose.A promisor who is honestly dissatisfied with the promisee's performance has the right to reject the performance without being liable to the promisee.