And just as a side salad on coin buying, Rob gave me good advice a while back, don't think about what is good about the coin, (big, bright and shiny etc) try and find it's bad points and reasons you wouldn't buy it.........TPGs love tone also, so you do get grade points for that (which i do find strange) although, when buying coins, eye appeal to the beholder is also an important point...
Next year, i'm going to try a year with NGC and see how that goes, they have an office in Munich so i have no postage costs