One I carry now is made by the people that do Slime products... http://www.slime.com/product/911/Tire-Top-Off-(40020).html
Got it as a gift ( tho I see its about $13 )... it will pump up to 40 lbs+ and its small enough.
I reciently went on a search for a Slime compresser. I found the best selection and bought this one for $10.