when it comes to power, low end chips win by order of magnitudes ( for example http://ww1.microchip.com/downloads/en/DeviceDoc/30009941G.pdf http://ww1.microchi

when it comes to power, low end chips win by order of magnitudes ( for example http://ww1.microchip.com/downloads/en/DeviceDoc/30009941G.pdf http://ww1.microchip.com/downloads/en/DeviceDoc/30009941G.pd... ). But it all depends on what your power constraints really are