streets ahead
Having an advantage over or outperforming other competitors. Primarily heard in UK. This computer system is certainly streets ahead in terms of cost and performance. Susan was able to stay streets ahead for most of the race, but she allowed the others to catch up as her energy waned in the final stretch.
streets ahead
BRITISHCOMMON If a person or thing is streets ahead of another, they are much better or more advanced than the other. The Waratahs were streets ahead of the home side. In engineering skill, the company is streets ahead of its competitors. Germany is streets ahead in environmental awareness.
streets ahead
greatly superior. British informal 1991 Alistair Campbell Sidewinder He has his shortcomings, sure, but he's streets ahead of Dr Nada.