Topic: Slippage
here is a pic that I extracted from MQL5 forum that demonstrates slippage and compares several brokers
This is an approximation and does not include all brokers but it gives an idea as to what we can expect.
In one popular forum, that many of us belong to, brokers are referred to as 'criminals' or 'crims'. It is easy, once you look at this pic, to understand why.