If I were in your shoes I'd go with TL because I like the look better & my wife & I have a 05 w/ nav. Also it really depends on how much hp, front or rear drive & of course insurance & which overall best siuts you.
Both are pretty nice cars. If anything I would get the coupe like the Z instead of a sedan. I feel from the factory options I feel Acura has the edge. A spec package. Good luck & post pictures after you get it.