In looking at different surge protectors, we finally decided on one made by Progressive Industries Inc. It was pricey and we went with one which is hard-wired into the trailer vs. portable. It appears that the portable ones protect just as well however, I am concerned about it getting stolen while we are out camping, not cheap to replace. We are having our dealer do the install right now so I can post pictures once I have the trailer back. The one we are using has a separate LCD monitor panel which will display the various codes, etc. RVupgrades.com had the best price I could find. Here is a link to the one we purchased: http://www.rvupgradestore.com/RV-Ene...p/emshw30c.htm
We have been in a couple campgrounds before with another trailer and had some problems with the electrical box we plugged into and causesd some issues, want to avoid that with the new trailer. I'm looking at this like an extra bit of insurance, may not have problems but nice to have in case we need it.