US English Text-to-Voice & Voice-to-Text Creator

I'm looking for a professional tool for converting US English text to voice and vice versa. This will primarily be used in the creation of content for podcasts and videos.

Key Requirements:
- High quality, clear and engaging US English voice
- Efficient and accurate voice-to-text conversion
- Real-time transcription capabilities
- Speaker identification for multi-speaker scenarios
- Punctuation and grammar correction for improved readability

Ideal Skills:
- Experience in content creation for podcasts and videos
- Proficiency in voice modulation and clarity
- Expertise in accurate and timely transcription
- Familiarity with speaker identification techniques
- Ability to edit for punctuation and grammar

Please provide samples of previous work if available.