I learned about ExHub through Bestchange. It offered some of the best rates for exchanging BTC, and the number of positive reviews confirmed its reliability. I also didn't find anything seriously negative about the converter in other monitors. In the end, I've exchanged here several times, mainly converting BTC. The exchange operates around the clock, which eliminates the need to adjust to a schedule. The rate is fixed for half an hour, and if you don't make it in time, it will be recalculated. But this can work in your favor. Once, I found myself in such a situation: usually, I would receive 2 network confirmations in that time, but due to the fee, I didn't make it, and the exchange was delayed. As a result, I received a little more than what the calculator showed. The exchange could have kept that difference for itself, but it acted honestly. On the downside, I note the limited number of directions. There are very few payment systems, so this exchange may not suit everyone. It's mainly convenient for withdrawing cryptocurrency. Several coins are supported, not just BTC. You can also conduct cash transactions through an office, but unfortunately, there isn't one in my city. If there were, I would exchange cryptocurrency for cash. This option would be useful for residents of large cities like Moscow or St. Petersburg.