If I were you I would buy the best one that Progressive Industries has. This is no place to skimp. I have seen a case where the underground cable from one pesto to another failed and caused high voltage which caused a lot of damage.
If you ever think that you might get another RV in the future that would be 50 A I would get the 50 amp version from PI and use a 3250 amp dog bone adapter. The 50 amp receptacles on the pedestal are usually in better shape than the 30s. Sometimes the 30 amp pedestal receptacles are so worn that they caused an excessive amount of heat at that point.
You may call me on the phone if you want to talk about it further.
