When I bought my PM 66 I decided to go with the 52" fence. I have a 17' x 23' shop with a staircase and mechanical equipment. I have it on a mobile base and jockey it around from time to time. I put the right extension table against the wall. I have my RAS on a mobile stand in front of the table that can help on the infeed side for wide boards or can be moved out of the way for working on the router table mounted in the right extension. I also use the TS as an assembly/glueup table where the extra width helps.
Mike