I have been using round section handlebars for years. I swapped out my old bars for these primarily for the flattened tops. Installing them myself pretty easy. The groove for the cable-casing was tucked nicely away. The shallower drop and shorter reach was an added bonus: the cockpit now feels like it fits me just so -- and no more sore hands.
I preferred aluminum over carbon, obviously for price, but these are just a few grams heavier than carbon, and even though it might be a superstition on my part, having had a friend break carbon bars, I feel more secure with metal for this part.
I got the bars to go along with upgrading components on an a new All City Space Horse. I like how the bar is shaped with a slight flare in the drops. The bars have holes for cable routing to (I presume) bar end shifters as well as recessed areas under the tops (instead of the front) for securing cables when wrapping the bars. The tops are also noticeably wider, which makes for a great feel of control when climbing. Overall I'm really pleased.
I had a pretty rough introduction to road biking, sustaining 4 flats in my first 3 rides. These tubes have not yet sustained a flat since I installed them 10 rides ago, but I don't want to give them too much credit there. I will give them credit for the best installation experience and the best valves I've used. Again, not much experience, but until someone shows me a reason to buy a different tube this fits my budget and I see no reason to change.
4/5 I like it, don't necessarily love it, though. 3/5 Reasonable price, probably 4 stars if you catch it on sale. Overall, the mount is nice if you use the beefy Sprint SL stem and actually want your device to be centered. OCD-ers rejoice. The actual mount arm piece is a bit thick, though. Not sure it needed to be. Also, the finish is matte alum, and while it doesn't really clash with the polished carbon stem, it doesn't exactly match either. Would love to see a polished version. Taking it out of the packaging, it feels "heavy" but once mounted you don't notice the few extra grams despite it's size as noted above.