I am picking up a Lance 1575 on Saturday and based on the advice here, I am getting the Equal-i-zer! I think it will be a good investment. I am pulling with a 2005 V8 4Runner with a 7,000lb towing capacity and a weight-distributing hitch that can take a tongue weight of around 1,100 lbs, if I remember correctly.
Th dealer said I would probably be okay with just a simple sway control. I wasn't sure so I guess I will err on the side of caution since the 4Runner does have a relatively short wheelbase.