Withdrawals from GDAX are free so you can transfer over your BTC and then use that to purchase alt coins. Finance also has a good reputation for fast transactions!
Good luck
You meant,
Finance Binance, right?
and no, Binance has faster transactions just because their withdrawal fees are usually higher compared to other exchanges.
They have just cut their BTC withdrawal fee by half (back to what it was a few months ago).
But also a point of consideration to question being asked, trading fees on Binance are reduced by 50% by holding some BNB (Binances own coin).
They are a good investment in themselves as well. So if you're planning to trade on Binance, pays to buy some BNB.
And their transactions are processed fast as already mentioned. I've used Binance primarily for most of my trading. They are reliable and trustworthy.
