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Bar none. But I would trade futures, or if you do cfds, go with mt5 - it has more tools that the cfd UI that they have developed(called PXtrader, its good, a relative of Tradingview, but has some limitations that I found).
Its the only crypto broker/exchange with real regulations, like FSCA etc, so I feel a bit more comfortable having most of my trading funds in there. I think things like Kraken or OKX are not at all as safe as Primexbt right now.