When it comes to expressing a preference for doing something, there are several phrases you can use that mean the same as "I'd sooner do something." You can say "I'd rather do it," "I'd prefer to do it," or "I'd like to do it better." Alternatively, you can use the phrase "I'd be more inclined to do something," or "I'd be more likely to do it." All of these phrases convey the same meaning - that you'd prefer to do something over another option. Using these synonyms can help you convey your meaning more effectively and avoid repeating the same phrase over and over again.