We looked at the c preamp for the 4018, super small, super light, super sound,just decided it wouldn't be rugged enough for multi user broadcast TV environment...
I love the extra suck and punchy sound of the 50 over the schoeps..i used a 50 on a feature for nearly every shot ( and only 2 scenes radio miced), it was great, where as the schoeps often didn't have enough suck in comparision ..