The Ascent is certainly a nicer ride with a quieter cabin. Everything you read will tell you the Ascent feels more "luxury" than the Highlander, but seat comfort is very dependent on the individual. People vary so much in shape and size, there's no perfect solution for everybody. For this, you'll actually have to go out and sit in them yourself. You could be in the most luxurious vehicle in the world, but if the seat just doesn't work for you, then it won't matter.