They had a bit of a reputation not so long a go,but as long as you know what you are looking for and how to spot "a bad un"you should be ok.
He does seem a little over priced sometimes and some of the cars he has, havent been the best for the money he wants.
If he had offered me £500 more on the PX i had i would have had a cossie of him,but he wouldnt do it.