Desperately need help to decide between these two. Currently towing Choachman Amara 520/4 with Volvo S60 D5 which tows very well. Thinking of changing van to twin axle weighing 1700kgs and consequently need to change car. Don't want to spend more than about 24K. I like the write-ups on Sorrento but appears there is an economy issue and auto would put it in top tax bracket. Santa Fe appears more economical and has better on road manners, but would it be up to the job ?