Before asking for ‘best’. Define it first in your mind.
Do you want the cheapest doing questionable
stuff with fixed spreads? You already know brokers
like that are already questionable so why seek them
out only to whine about them later?
Start with reputable brokers from the get go.
I have tried almost every top brokers out there.
I have settled on Dukascopy now and I am
very happy. If you are serious, Dukascopy is
the only way to go.