Both images are coooooooool. #84 is not the right color scheme - I'd really like to see a variation in navy blue and orange. #85 is also good but the connection with optimization, while present, is a little too hidden - maybe it's also a little too plain.
We'd like to see #132 with the orange and white swapped (i.e. orange on top, white below). We'd also like to see a slightly brighter Orange (like the shade used in #135)
I like #182 but I think it looks a little too "skinny". I'm not sure how it would look on a presentation from the back of the room. More "beefed up" variations may look good.