real easy this one dude !

neither of the fuckers man, i'd rather have a proper one with no rust and low miles and loads or full history and a nice original ford service history book showing the ford stamps that prove the original owner/s were proper and not a scabby dickhead with the pot running on empty

and another thing how do you know a 17 owner shit cosworth showing 60 odd thou is correct and not had a haircut or on its 3rd lap of the speedo ? who if were honest wants a car like a cosworth thats been round the clock and the seller or last dozen owners witholds that info.
History is the key to get great money for a really good car but theres always someone who will buy a shitter for a fortune because they know no better !