Question Best and cheapest ddr4 16 GB RAM?

[Hypoltan]

DDR4 RAM comes in speed ranges from 2400 to 3200, while it is a big jump in numbers, is there really a big difference and what do you think is the best model?
Additionally, what is the cheapest ddr4 3000 16gb of ram that I can get?

 

[Roger Har Dang]

G.Skill