Barker makes nice jacks. I have a 3500 VIP with a 24" lift stroke. Considering it lifts up the back of your truck along with the trailer, I wanted one with some capacity, plus I nice high lift for those odd ball camp sites. If you shop around you can find one for about $275. Atwood and Ultra Fab are also popular brands.
1999 28' Safari
2012 F150 Platinum Max Tow 7650 GVWR 3.73 Elec. Locking Diff.(Prev 2003 Dmax).
Honda EU2000i, Equalizer Hitch
AM Solar Panels 150W - 2 Trojan T 105 6V Batteries
On internet forums, please research and separate the wheat from the chaff (including mine!)