I have this Spigen one, And its protected it from some pretty bad falls. I let my toddler use my phone sometimes while out having dinner and its survived quite a few table falls to concrete or wood floors.
https://www.amazon.com/Spigen-Rugged-Resilient-Absorption-Carbon/dp/B01N6T9PHS/ref=sr_1_fkmr0_2?ie=UTF8&qid=1498164316&sr=8-2-fkmr0&keywords=lg+g6+spigen+rugged+armor+plus