Which is the best and most reliable exchange to trade BTC for XRP (Ripple)?
You can try litebit.eu if you are in Europe.
Have you watched the thread date, do you think OP is searching for the best exchange till now?
Most probably not.People just start posting without reading properly.As it was clear from op that at the time of posting there were only 4 exchanges.
Now ripple is available on Poloniex and Bittrex also.