What are the differences between Searcy's PH DR, his Deluxe DR, and the 577 boxlock? Does anyone own any of them and if so what have been your experiences? I am trying to decide which Searcy to get. I have plans to go see his shop and check out a few DR's in early november. I really like the 577 Boxlock but a few people have told me the 500 might be a better choice. Any experiences would be very helpful.