I am using, LIMI inflator since last three years. It is a reliable & wonderful product.
Since last 85000 km, my tyres must have got more than 15 punctures,but never needed to use the spare wheel as I use to inflate the punctured tire (5 minutes for a fully deflated tyre) and take the car to puncture repair guy near by.
Also, it comes with inbuilt hazard light and a powerful torch which helps in finding out the tyre valves and safe inflation on the side of road.