LRR will do best in a highway setting. Low weight will do better in a stop and go setting. There are some cross over areas, but this is the general idea.
We got heavier tires this time and there is definitely a penalty for weight. Starting and stopping takes more power. It has gotten better as the tires have worn down, but it is still there. I do like having more rubber on the tire though, because we used to get all kinds of flats with those thin walled economy tires.
I might try a lighter tire next time, but I really like the tires we have.
As far as LRR tires, I don't like how stiff the tread area is. It's like a plastic ring and that will likely inhibit traction in off road or rough road scenarios.