I stopped using Bittrex because of their new verification demands. Don't get me wrong, i understand that for trading with fiat or trading huge volumes a identification is mandatory, but for a small hobby trader like me who only trades small volumes of alt coins? A selfie with passport, seriously? What's next, blood and urine sample? Hey, i entrust them my money, what about them sending me selfies with passport?
For trading with fiat i use
https://safello.com and are very satisfied with them so far but, at least for BTC to Euro, the minimum amount is rather high (0.05 BTC). Verification was quick and easy.
https://unichange.me/ also does smaller exchanges but with rather high fees.