Here, you will get many recommendations for the older grills with the controls on the side. I think those grills are beautiful, but I just don't like the "east-west" burners.
I normally do 2 zone cooking and find "north-south" burners much easier to work with.
*I can see how the EW configuration would be great for rotisserie cooking, if you do a lot of that.
Like everyone else said, it depends on how you want to cook.
I have a Genesis II 3 burner, open bottom, and I absolutely love it. Jason has vouched for the Spirit II.
I don't think you can go wrong with either.
As for this year's models - I don't have any experience with those, but in the stores, they look kind of... flimsy?
To me, at least.
Good luck and have fun with the hunt!
Let us know what you wind up with.