Choosing the best 50-inch TV in India involves considering factors such as display technology, resolution, audio quality, smart features, and brand reputation. As of my last update in January 2022, here's a comprehensive guide to help you make an informed decision.

1. LG OLED55C1PTZ:

Display:

• 55-inch OLED display with vibrant colors and deep blacks.
• 4K resolution for stunning clarity.
• OLED technology ensures individually lit pixels for superior contrast.

Audio:

• AI Sound Pro for immersive audio.
• Dolby Atmos support for a cinematic experience.

Smart Features:

• WebOS for a user-friendly smart TV experience.
• Voice recognition with LG's Magic Remote.

2. Sony Bravia XR-55A80J:

Display:

• 55-inch OLED panel for excellent picture quality.
• 4K HDR resolution with XR OLED Contrast Pro.
• Triluminos Pro technology for a wide color gamut.

Audio:

• Acoustic Surface Audio technology for sound directly from the screen.
• Dolby Atmos support for three-dimensional audio.

Smart Features:

• Google TV for a vast range of apps.
• Works with Google Assistant for voice commands.

3. Samsung QA55Q80AAKLXL:

Display:

• 55-inch QLED display with Quantum Dot technology.
• 4K resolution for sharp visuals.
• Quantum HDR 12x for impressive dynamic range.

Audio:

• Object Tracking Sound+ for an immersive audio experience.
• Dolby Digital Plus support.

Smart Features:

• Tizen OS for a seamless smart TV experience.
• Multi-View to display content from multiple sources simultaneously.

4. OnePlus 50Q1IN-1:

Display:

• 50-inch UHD LED display.
• 4K resolution for clear and detailed visuals.
• Gamma Engine for improved picture quality.

Audio:

• Dolby Atmos support for immersive sound.
• 30W speakers with 2 subwoofers.

Smart Features:

• Android TV for a variety of apps.
• OxygenPlay for content discovery.

5. TCL 50P715:

Display:

• 50-inch 4K UHD LED panel.
• Micro Dimming for better contrast.
• HDR support for improved brightness and color.

Audio:

• Dolby Atmos for an enhanced audio experience.
• 30W stereo speakers.

Smart Features:

• Android TV for a wide range of apps.
• Hands-free voice control with Google Assistant.

6. Panasonic TH-50HX450DX:

Display:

• 50-inch 4K Ultra HD LED panel.
• Hexa Chroma Drive for accurate color reproduction.
• HDR10 support for improved dynamic range.

Audio:

• 20W speakers with DTS Virtual:X for immersive audio.
• Dolby Audio support.

Smart Features:

• My Home Screen for personalized content recommendations.
• Swipe Share for seamless content sharing.

Factors to Consider:

1. Display Technology:

• OLED displays offer superior contrast and vibrant colors.
• QLED and LED displays are more budget-friendly with excellent picture quality.

2. Resolution:

• 4K resolution provides sharp and detailed visuals.
• Consider your viewing distance; for a 50-inch TV, 4K is generally recommended.

3. Audio Quality:

• Look for features like Dolby Atmos for a more immersive sound experience.
• Check the wattage of the speakers for sufficient audio output.

4. Smart Features:

• Choose a TV with a user-friendly smart platform like Android TV, WebOS, or Tizen.
• Voice control features can enhance the user experience.

5. Brand Reputation:

• Established brands like LG, Sony, Samsung, and Panasonic often offer better reliability and customer support.

6. Budget:

• Set a budget and compare models within that range.
• Consider future-proofing by investing in features that will stay relevant.

Note: Prices and availability may vary, and new models may have been released since my last update. It's advisable to check the latest reviews and specifications before making a purchase.