Choices for tire replacemnt

There's a thread here showing the tread pattern of the tires offered. Personally, I'd eliminate the Uniroyal and choose between the Michelins. Uniroyal if probably a fine tire, but the Michelin name needs no introduction anywhere in the World. Unless you actually Know that you will Need a tread offering extra traction, go with the LTX M/S/2. The less aggressive the tread, the quieter it will run, and the straighter it will track.
Also, your E350 can achieve max weight using Load Range "D" (LRD or LR-D) tires. Replacing with Load Range "E" will give you a margin of capacity and durability.