We traveled together with our US friends. I chose Anur Tour because the other two I read about (one Uzbek and the other Kazakh) charged higher prices. Everything was smooth. The guides met us everywhere, transportation was provided and the choice of hotels was good. We were shown the best of Tashkent, Bukhara and Samarkand. The guides are very knowledgeable and can change dollars for Uzbek soms at best (black market) rates.
The bad things we heard about Uzbek customs are exaggerated. Just follow the rules: fill out the customs declaration, mentioning all your valuables, and keep the registration notes you receive at hotels. The country is very quiet and clean and the Uzbeks are very hospitable. The prices are low in general but the ones at the Chor Su bazaar in Tashkent are higher than I expected.
We traveled in November when there are few tourists and it is not hot. Luckily, the sun was shining.