never replaced thermal paste before, but gona do it now, since i dnt have much knowledge about it, which do you recommend?

ARCTIC MX-4 8g - 19 dollar

Cooler Master Cryofuze 2g - 5 dollar

Cooler Master Cryofuze Violet 2g - 3.11 dollar

Cooler Master MasterGel Pro - 7 dollar