Ok well zalmans are some of the best air aftermarket coolers available. The fan isn't the main part when it comes to cooling its the actual heatsink and how effective it is at absorbing the heat up from the cpu. The fan merely cools of the heatsink, so if your case already has good airflow it won't make much of a difference. As for getting what you pay for, true to a certain extent but not completely. When it comes company to company it just varies on different things. Either one are great coolers so just whatever you feel is better.