I signed up with DSJ Exchange (dsj58.com) from a review site like this one and the first red flag was the aggressive account manager who would not stop calling. After depositing, the promised support vanished. Withdrawals are delayed with endless excuses. I have reported them to the regulator.
Pros: Fast deposits|Transparent fees|Portfolio tracking tools|Clear documentation
Cons: Slow to add new assets|Research section could be deeper