I'm planning on ordering a couple cases.. Please let me know the differences between these Dunlop balls in terms of feel, integrity, longevity, ball bounce, fuzz fluffing, weight, and hardness. 1) Dunlop Championship Hard Court (aka Dunlop Champ XD) - mostly black packaging http://www.tennis-warehouse.com/viewlarge.html?PCODE=DCHTBC 2) Dunlop Championship Hard Court -green packaging with see-thru stripe at center 3) Dunlop Championship McEnroe - mostly black pakaging w/ John McEnroe face picture 4) Dunlop GrandPrix Hard Court - mustard packaging with see-thru stripe at center http://www.tennis-warehouse.com/viewlarge.html?PCODE=DTBC Optimally, I'd want to get one with good feel, not too heavy, VERY durable, GREAT LASTING bounce (want it to retain bounce for at least 2 weeks). let me know! thanks!