i am pretty sure the PFCGTR33L is the hand controller and PFC combo bundle
and the PFCRB26 is the older FC and hand controller seperate part no #'s
the PFCBR26 probably has older firmware on it
the rb25 units follow this trend;
ECR33 PFC is the newer style PFC and hand controller combo kit
and RB25 PFC is the older style PFC and hand controller seperate items
if you buy the PFCRB26 be sure to get the right hand controller, it should be N001 i think, X001 is the newer style hand controller to suit PFCGTR33L