Index Of Bubbly Jpg Is A Powerhead Much Better Than The Airpump/airline/airstone Combo?

Is a powerhead much better than the airpump/airline/airstone combo? - index of bubbly jpg

I have an air pump into the tank to supply my 28 until my fish with dissolved oxygen, but the peak of power, seems much more impressive than the air pump, bubbling of age. If they are better than an air pump, which is a good guy to have? Heres a link:

http://www.elmersaquarium.com/nav/freshwater/index.html