All broker now have a "plugin anti scalper, plugin volatily market, plugin hidden spread, bla bla bla bla plugin"
sorry i dont tell from this list broker is bad broker but believe it , if have try it too and see my friend collegae have problem to thats broker
example :
1. XM, DONT RECOMENDED scam, cheat, didnt professional server, scare to client arbit/algo high frequensi
2. fbs, didnt recomended for big money or big profit, soon from DealingDesk , they will be cheat and monitor your acc, event they have ECN but it same too huge commision
3. pepperstone or tickmill (sayheles) not good too, huge markup spread , and have a gap price, sorry i dont have video rec, but whats i tell this is experience self , tickmill FCA still good
3. Broker FCA regulate soo far good for arbit but for now , ESMA rule didnt recomended again for retail trader because max leverage now 1:50
4. lmax soo far good for arbit or highfrequensi