You have two choice on types, hardwired and plug in. I would recommend hardwired, less chance of having to worrying about it walking off, securing it or forgetting it.
As far as brand, there are many different brands and folks here will let you know which one they think is best and why.
I personally have the Progressive Industries brand for my trailer. I have always had good service with their product and customer service.
I have heard Surge Guard and Bull Dog are also good products
2015 F250 6.7L Lariat Crew Cab
2017 Jayco Jay flight 28BHBE
Equalizer 14K Brand WDH (2.5" Shank)
2013 Jayco Jay Flight 26BH (Sold)
CMSgt USAF (Ret)
"GO BLUE". University of Michigan