I have used Binance and never got issues, the UI/UX may not be the best but definitely usable. I'd recommend it over Bittrex at anytime as they don't request personal info. Changelly and ShapeShift are very similar with the same concept of being able to trade without owning an account etc. (Coinomi, Exodus, Mycelium etc. are examples of wallets that have these two exchange built inside them). Cryptopia and Yobit are with no doubt the worst, the main reason why people use them is because they sometimes list coins other exchanges didn't add yet. Overall, I suggest HitBtc and Binance, I have zero complains about them.