my father has this http://www.ebay.co.uk/itm/AIR-COMPR...d=100005&prg=1048&rk=2&rkt=4&sd=310835502306& from the same brand and it hasn't stopped in the couple of years that he has had it. uses it for everything from spraying to tools and inflating tyres, sandblasting and used it to pump up a medium sized bouncy castle in not a lot of time lol
the engine is a chonda so about £100 worth. the pump look a bit small to me but the tank will be made up to the same standard as all the others these days (except the high end stuff) so all in all if i had need i would consider one.
I run a chonda engine on my log splitter rig and it work a treat