Hey CJ. I think your question will spark a lot of spirited discussion. We own the Ellipse but it's a 2007. Since you're talking about the two models being top of the line I assume you're looking at new ones since they were only recently "promoted" to that status.
We love our Ellipse but also drool when walking through the new Tour. Comparisons I've heard in the past include the Buick vs Chevy analogy and comments about Itasca coaches having equipment as standard which is optional on the Winnies... but, I don't really know if there is a definitive answer.
I don't think you can go wrong with either.