This spring I had my worn out Maxxis tires replaced with the Endurance tires (it's what my local Discount Tire store had in stock). I noticed a slight bit of side to side movement with the new tires compared to the old Maxxis tires but it was not enough to make me want to take them back.
We just got back from a 5500 mile road trip with absolutely no tire problems with the Goodyear tires. Even though these are speed rated for 87 MPH (IIRC) I kept my speed down to 65 MPH for comfort and safety. My tires are ST225/75 R15 LR-E and I keep them at 80 PSI. My TT GVWR is 9680 pounds.
I would buy these tires again. Best of all, they're made here in the USA.