D.inkie.. These ar poorly devised layman's questions I am now asking you. My apologies... How critical is the need for 1) preservation of space? 2)increase in speed and........ (I assume) 3)preservation of battery life? 1) DOS vs MOS....How much "space difference" in a "typical" device?? Is there a "significant" difference?? 2) DOS vs MOS....How much "faster" with a "complicated" audio/video device with multi-codec/multi DRM capabilities?? 3) DOS vs MOS...How much battery life is preserved in a "typical" device described in 2)?? Can these questions even be answered the way I am posing them? Do we even know enough to speculate? Sorry also for all the ".."s.. jtdiii