Frankly speaking, it depends on your comfort levels only. I love doing all types of trading but
Crypto Trading is my favourite, as there is so much potential. We can figure out a good broker which allows us to do all type of trading, so this makes it so much easier for us to select and that really helps with making money. Often becoming one-dimensional leads to restricting yourself when it comes to profit making, so this is something thats very much a no.
I prefer platforms with tightest spreads. That's why i don't like to trade on Forex. They have high comissions. By the way where do you trade ?