Hi Colin, I think my Santa fe is a good tow car, the only thing I could critisise is a slight lack of power, my engine is only 111bhp, I think yours is 134ish bhp, the main issue is probably the fact our van is a 26ft twin axle, having said that I fitted a diesel tunning box and the difference was phenomenal, it made itself felt when solo but when I dropped the van onto the back it really did make it's presence felt. Stability superb, general handling of the complete outfit, never felt anything other than excellent, when overtaking or being overtaken I have never felt the van take control of the car, I can't coment on the Ix35, other than what I've read you really shouldn't have any problems, I've had my Santa fe for 2 years now, would I buy another, yes without a doubt.....
Mike