I like to day trading. Maximum time I like to trade on Idex. Idex is low quality but cool exchange site. There are maximum number of people doing trade on binance. Now my question is Which is Best exchange for Day/Short term trading?
Go leveraged trading in Bitmex. By leveraging a position, you can get more profit (and potential loss too, remember). You won't have to pay the settlement fee either if you close your position before the settlement happen. Don't worry about engine and volumes, Bitmex has the best trading engine (although it may be not functioning properly during peak session, but can't blame them for that) and biggest volume.
Actually, when it comes to day trading, I will likely prefer a leverage market and in this case, you can always take advantage of both the long and short of the market.
However, margin trading is something that should be cautiously done, considering the fact that you can easily get burned if you do not even have any clue how to trade, have no strategy at all, and you take trading as a gamble. Trading itself is risky and you can lose money, but when it comes to margin market, it is even a lot more risky and you can lose everything totally if care is not taken.