A friend bought an X1 this week. He said the service has been superb. No quibbles return policy. They believe in their stock and won't sell poor cars which will result in a return. The descriptions are very , very detailed and they high light every scratch , rather than hide. As always buy the buyer - and they have got a very good rep. I would buy from them no issue.
I bought my 911 blind , and has Porsche Edinnurgh deliver to me in London. Again , I know Porsches used car sales prep is so good that I was confident buying it blame. I would never buy from a small independent blind or privately.