Bitcoin transaction fee is approximately higher on exchanges and transfer time is also too much
Also there are many alts which have lower transaction fee and fast transaction even on exchanges
But If we search for best one to transfer our funds from one exchange to other than I suggest you to use stellar (xlm)
Reasons to use xlm :
-it is available mostly on all exchanges
-it has good volume on all exchanges as compared to that exchange total volume
-it has lower fee (0.0001$ approx) than all alts on exchanges
-it is instantly transfer in seconds even through exchanges (exchanges takes more confirmations for other alts but for xlm they takes only one confirmation mostly)
So I found it best for transfer funds between exchanges. I uses xlm always when there is instant requirement for funds on any exchange or I have to transfer small amount.
I hope this information will be helpful for people ( mostly traders and Noobs having small amount )
Please share your experiences if you uses xlm and other alts for this purpose
I also prefer to do your own research on it
Thanks
Very good option as a alternative of bitcoin to make transaction , since I made also analysis that it is better to have as a option because it have high volume of trade , so easy to convert back into btc to xlm and vice versa .
But still here I am not using this option much because bitcoin's segwit wallet is better for me to make transaction to save fees .
But surely where segwit address doesn't support I tries to use xlm , eth only .