The Viar 450P kit is hard to beat for a portable 12 volt kit... 100% duty cycle (under 100 psi) and 1.8 CFM. comes with a bag, hose, and tire inflator with a gauge
amazon link
The ARB's are nice & work great for permanent install but are expensive
Don't waste your money on the smitybilt, I have no experience with it but most of their products are cheap rebranded Chinese junk. They look similar to the Slime brand compressor I got years ago for $100. Great for ATV & small car tires, first attempt at airing up a trailer tire to 70 PSI took forever then got so hot it melted the hose off. It almost left me stranded.