Luc, Favourite contests for USA M/M and SO big guns are ARRL and CQWW. WPX is still mainly European big stations event. However, team at my friend's, and ex contest mate at LZ1KDP back in 1980ies, Krassy at K1LZ made an outstanding M/2 score in WPX SSB 2010 ! 73, Wally LZ2CJ