Spreads

I was looking for a broker that would have small commissions and narrow spreads. I was thinking that if broker takes some commissions, then this is a sign that its spreads are narrower than in other companies. I knew that XM has no commissions, and therefore I began to study trading conditions of this broker last of all. But I was wrong. XM doesn't really charge commission for opening or closing trading orders. Not on any of CFD trading accounts (Micro, Standard, XM Ultra Low Accont). But at the same time, spreads for many financial instruments here are narrower than those of some brokers that charge commissions for trading. Of course, I opened trading account here. I want to get the most favorable trading conditions