After looking at several options - we went with the RuffWear brand because of good experiences with other RuffWear products.
We also loved the fact that this harness came with metal buckles (some had plastic parts) and had excellent placement for the seatbelt strap.
After taking a 4 hour roundtrip drive with our Great Dane - where he was secure and happy despite one close call with a fast breaking, we are confident and happy to reccomend this product to others.