The fastest way would be triple farming. I fear that both of this chars are not really made for ongfarming. The Rogue would need lots of Bolts and Pots, and he would need to loop to fast (i've been thinking of this spreading attack where you shoot many bolts at once). The nuker would waste lots of MP .. and BOTH are way to high due to party average. However if i would want to choose one of them, i would for sure choose the Nuker. But always consider the party average .. lvl 110 is really high already .. better a Wizz around 70~ .. if you could buy for gold one or lvl fast one to 70 ..
About farming guides, look here at Guide section and yea .. google helps too ..
