32la6620

Hi, I'm a complete noob here and need your expertise on the various technology used in the products 1. LG 32LA6620 2. LG 32LA6200 3. LG 32LM6410 Also, I need to know the differences these models have. Are they able to play mkv, mpeg4, .ts video files with AC3, AAC and DTS 5.1 audio codecs...