I remain unconvinced. In Atlanta alone I find myself waiting up to 30 minutes for a UberX because nobody tells them about potential traffic conditions, and nobody knows the city routes. Maybe its different when I price up to just Uber service, but this is pretty inexcusable.
I've used Uber over a dozen times in Atlanta. I've used each of the three tiers of service as well, and in varying traffic conditions. I used Uber, and UberX whenever it was available, morning and night going to Dragon*Con in downtown Atlanta (read: bad traffic) and every time they were punctual and the trip was quick. I typically wait no more than 10 minutes for a driver of any tier.
We're both just a data point, but I'm surprised you've had such a bad experience where I now refuse taxi service in favor of Uber. The quality difference is night and day.
Perhaps related, I took an Uber the other day with a driver who didn't know routes, nor English very well. I'm guessing Uber pays better than taxi companies.
I've yet to try uber X here (in Atl) as there always seems to be an uber black far closer. I don't think I've ever waited more than 15 minutes. I'm seeing a few lyft vehicles around recently also. I do wonder if in ATL, the relatively smaller difference in price for uber x leads more people to just splurge on a black car.