Though reports of pedagogic materials production point to the range of compromises authors make when writing language teaching textbooks, many accounts are retrospective in nature. This study sought to expand the research perspective by interrogating writing episodes via qualitative content analysis to discover how two expert ELT (English language teaching) textbook writers managed compromises during ongoing coursebook development. The authors' data sets -- primarily composed of think-aloud protocols and transcripts of pre- and post-concurrent verbalization interviews -- revealed that they applied pragmatic judgement when contemplating the incorporation of textually authentic material and reconciled continuity and variety when developing unit frameworks and content, all with textbook audiences, contexts, and purposes in mind. Further, one of the authors reached compromise with project partners to integrate monologue and dialog texts into his book, while the other squared pedagogic imperatives with publishing realities by skillfully navigating textbook length, design, and deadline parameters during her project. By reconciling ostensible opposites to reach compromise, the authors balanced complexities to see their books through to completion. This research may inspire neophyte textbook writers' efforts as they examine the architecture of writing sessions and prompt teachers to weigh authorial choices and balances during ELT textbook evaluation.