I think lots of installers have their opinions influenced by their relationship with the manufacturer. I did lots of reading on MUD and was leaning toward the e lockers until I spoke with them. They used to install the Harrop / Eaton lockers (I think they are the same? Isn't a Harrop just a...
I had lockers and a regear done earlier this year at Slee. I wanted to go with the harrop / eatons but they convinced me to go with the ARB. I was told they no longer install the e lockers as they have had issues with warranty claims.
They were very helpful answering all my questions.