I love the 109! But, I have to admit, the new LE 165 is giving it a run for it's money. I like having both b/c the 165 does a great job for contouring cheeks and jawlines, but I like the 109 better for contouring elsewhere or for blending.
I also like the 109 b/c it's extremely versatile and is the best bang for your buck IMO. But, if you can afford to get more than one, I would try them out and see which one you like best.