The main differences are: Display Quality - LG TVs feature higher resolution panels (4K), use advanced OLED/QLED/NanoCell tech for better contrast and color, support more HDR formats, offer 120Hz refresh rates, and get much brighter. Onn has cheaper HD/entry-level 4K LCD displays. Smart Features - LG webOS offers a faster, more polished streaming TV interface with far more apps supported. Onn runs basic Amazon Fire or Roku software. Audio - LG TVs have more powerful speakers, better sound processing, and support quality Dolby Atmos/DTS audio. Most Onn sets are basic stereo speakers only. Gaming - LG TV gaming features like 4K/120fps, VRR, and ultra-low input lag beat Onn models lacking any variable refresh rate or optimized console gaming modes. Build Quality - LG uses higher-end metal/plastic materials for better longevity and aesthetic appeal. Most Onn TVs are cheap plastic builds prone to showing wear faster over time. Price - Onn competes only on lowest pricing for frugal shoppers. LG TVs cost significantly more but deliver premium performance and quality in line with pricing.