Im never good at trading ,always lose money but how about those who lose money due to exchange been hacked? Well thanks to new exchanges that only support p2p ,no profiles ,no emails ,no passwords, they are the safest out there ,this is why I'm so hooked with changelly since 2016 ,so use this kind of exchanges and you are safe from hacks and phishing who is with me? Other exchanges that are like changelly are ethershift and tokenmom ,there might be others too
Instant exchange service is different from typical trading platforms.Yes you can really make conversions directly without the need of storing your coins into the site but when it comes to fees
it wont really be idea for you to buy and sell on changelly.Rates and profiting opportunities wont really be possible and also you can execute trades and made analysis into those platforms which do have charting.
Its up to you on which you do prefer.