TWRP (the one you flash in GooManager) allows you to "bake" your own ROM, i.e., let's you pick and choose which .apks you want installed, and it is a touchscreen interface. It was also the first one to avoid the sdcard multiplication issue when flashing from 4.1 to 4.2.
ROM Manager flashes ClockworkRecoveryMod, which doesn't (that I last recall) allow the ROM "baking", and unless you flash the touch version, you have to use the volume up/down and power buttons, which is no fun.
IMO, TWRP is faster. Much, much faster.