For our father's 50th birthday we want to get him a model train set - he use to be very active in collecting trains. I know ZERO about model trains - but all I know is that they are HO Scale trains that he use to collect. Can any one help us by letting us know what we should purchase - i.e. Which Trains and what accessories so that he can get started again. We may be looking into getting a vintage set. Any information would be GREAT! - Thanks!