Ok, about the volume I can imagine. I never made the effort to compare IG’s volume with “real” volume but finally what IG shows is only the tick volume of IG customers and not the volume from an exchange (if I’m not wrong here). I often wondered if this is so representative.

Then of course the spread widens when volatility spikes. That is annoying, I agree. Anyway I never was victim to unfair execution. But maybe this is different for others.

Anyway I think if you compare IG with other CFD-brokers there won’t be much difference. If you mistrust IG, I think it might be better for you to look at futures brokers like IB.