Hi there. This is techdevotee. I have Bergmann tyre inflator with me for a quick review.
This Bergmann tyre inflator seen in the video releases little air during fixing and taking out the nozzle. Also heats up little quickly during continuous use of 5+ mins. Other tyre inflators are not totally different though.
Before concluding, points to note here that tyre inflators come handy only in case of emergencies, that too on little extent but not for day-today usage.
Hence, my recommendation is to buy inflators, if and only if you are a frequent traveller and you are unsure whether the roads you are travelling will have puncture shops. Amazon link to this tyre inflator and few other tyre inflators are added in the video description for your reference. Ensure to buy only from the seller CLOUDTAIL INDIA on amazon for better experience and genuine products.