In fact, I don't think that account type is the most important thing you can think about when you choose a broker. In comparison, each account type has its advantages and disadvantages, and it depends on you which one to choose. You just have to understand that the choice of account type should be 100% dependent on your strategy.
A Fixed spreads account is better for long- and medium-term strategies, but bad for short-term strategies. Fixed spreads account is 90% higher than variable, so it is bad for scalping.
Classic (Standard) is good for short-term strategies. Spreads are variable, but in most situations they will be lower than with a fixed account.
Another type of account is the Raw account. I have not tested it, but I think it can be very promising, considering that it is very low spreads + $4 per round.