Use their search filter for "BRRip" to find the most downloaded English SRT file. Check the user comments; if a subtitle is "out of sync," users usually flag it immediately.
When looking for a "proper" subtitle file for specifically matching the BRRip XviD release, you are essentially looking for a "SDH" (Subtitles for the Deaf and Hard of Hearing) or a standard "Non-HI" (Non-Hearing Impaired) English track that is perfectly synced to the 23.976 fps frame rate common for Blu-ray rips. Quality Review of Subtitles for this Release subtitle The.Magnificent.Seven.2016.BRRip.XviD....
Based on community standards from major subtitle repositories, here is what to look for to ensure you have a high-quality "proper" file: Use their search filter for "BRRip" to find