no problems with SimpleFX here. I'm aware of the bad reviews, but they always withdraw and i have never had any trading issues. SimpleFX is the biggest of the BTC brokers and its possible you hear more reviews from users with problems while the users with no issues are not reporting to the reviews.

ClickTrades - never heard of them. Name sounds odd i probably will not check them lol. I'm still using xbtfx a lot i would say they are on par with simplfx but are more serious traders and have mt5. Sfx has a casino feel to it and mt4 is getting limited. cant explain it but its fine .

I mix it up, arbed DAX mixed other fx pairs. CFDs are the best arb results if execution is fast but 99.9% of the time the broker reverse the trade and say there was an error with the LP or i violated arbitrage policy etc etc.

i will say, my arb these past few months did not have good results. I think i believe now arb is a waste of time and none of the retail brokers like this type of trading. SFX did not profit, EM had slow execution,  xbtfx has an stp feature and i ended up break even on that in the end slightly down with fees. moving on to other trading strategies . Also, no general issues with any of those brokers . I think no or little kyc with crypto is better than normal fx