NOCO is the best, but typically a bit more $ than others. I have a Tacklife 800A; it works very well. I think I paid about $65 for it a couple of years ago. I've used it on everything from my dd (Tercel) to my Hummer (V8), and it has always worked flawlessly. Compact, lightweight, easy to stow. It would have no problems jump starting a SxS.