Jake,
I had the Stromberg Carlson like Marty's that came with our 13' 300BH. It currently runs $165 bucks on Amazon.
Amazon.com: Stromberg Carlson JET-3700 Black 3500 Lbs Electric Tongue Jack with Light: Automotive.
Like Marty said, super easy to install.
If you never have a problem, I guess it's the way to go, but through no fault of the jack, I bent the outer down tube last summer when the trailer shifted while unhitching on unsteady ground. Totally rookie move. What was frustrating is I had just picked it up from Crossroads for warranty work and was 10 minutes away from the plant. But alas, it was a Saturday and could'nt get hold of anyone there.
What I found when I called Stromburg Carlson was that their jacks as well as a couple of the other brands of the cheaper jacks are not serviceable for parts beyond the light bulb, a switch and the outer shell.
I did some research and called customer service for each of the following Brands: Barker, Bulldog, and Ultra-Fab about replacing the same part I busted on my existing jack. Barker and Ultra-Fab had complete replacement for all parts on their jacks as well as a full two year warranty.
Bulldog has a nice 5 year warranty but not really serviceable beyond the switches and light bulbs.
I ended up getting a Barker at a great price and all parts are serviceable and includes a 2 year warranty. I paid $247 on Amazon.
For me, based on how easily it was to damage the down tube and the top gears do eventually wear, the decision was to pay the extra 100 bucks and have a full two year warranty and serviceable parts.
Good luck