The Stroms are so reliable that you probably won't need a warranty. Ditto on what Rick said about cost vs. resale. Also, you will want/need to spend money on gear and "farkles" [strom-speak for accessories] for convenience and comfort. (Windscreen, bar risers ...)
2015 DL650XT w/ factory Suzuki/Motech side cases and engine guard.
First farkle - Motech center stand
Augustus Wind Deflectors
Fat, foamy grips
Givi AirFlow windscreen
Go-Cruise throttle lock
JD Astar 1260 lumen LED tail light bulb
Suzuki (SW Motech) Top Case
Hyde Racing skid plate
Adventuretech kickstand foot, fork brace, fender raising kit, and peg lowering kit.
Zita 26mm up / 20mm back risers
Sit and Fly Seat Net
So God created man in His own image; in the image of God He created him; male and female He created them. Genesis 1:27