The text mentions several Guru biographies. Which two are identified as the most prominent and comprehensive in Maharashtra, and what distinguishes them from others?

The preface, as detailed in Chapter 0, elevates two specific Guru biographies as being ancient, detailed, poetic, and comprehensive works suitable for devotional readings (Parayans). The first is the Guru Charitra by Shri Saraswati Gangadhar about Shri Narsimha Saraswati Maharaj. The second is the more recent Shri Sai Satcharita by Annasaheb Dabholkar about Sai Baba. The text explicitly states that 'no third work written in such detail is found.' While other works are mentioned, like one by Tembhe Swami, it's categorized differently because the Guru himself wrote it. Similarly, Dasganu Maharaj's works are noted as being excellent but 'very short,' solidifying the unique status of the Guru Charitra and Sai Satcharita as comprehensive biographies written by devotees.