What is the best type of pressure tank to use for a typical residence? I hear conflicting information about bladder and diapragm tanks? Is there a clearly better decision about which to use? Also, is it worth the extra costs to install the largest pressure tank available to reduce long-term energy costs?

In case it matters, I've got a 225' deep well that produces about 6gpm. The static water level is at -28'. 6" steel casing and have not determined what pump to use yet.