Something about the 1d i want soooo bad. I want the focus, i want the bigger sensor, i want the 1/500 flash sync, hell even the 1/16000 shutter speed. My 30d is ok... but i dont like the focus when compared to my 40d. I dont care what anyone says its slower and less accurate in low light and hell of alot slower in AI servo. I feel its no longer a good back up for my 40d for what i do. with the 1d and 40d combo, i will have the best of both worlds. Fast accurate AF in both, 1d being the superior for kids sports, 40d for longer distance due to its 1.6 crop, creamier bokeh with the 1.3 crop, sharpness with the 1d. Fast enough FPS for both for red carpet. 30d lacked some when other paparazzi are around, they fire off with a quickness with their 1dmkx's. Here is my current setup. 40d and 30d 550ex and 580ex with cp-e3s for both 18-50 macro 2.8, 70-200 2.8 with 1.4x, 30 1.4, 20 1.8. What i would sell is the 18-50 2.8 in favor of the 24-70 2.8 macro (sigma, optically the same if not better than the L, i dont care about L's) and also buy a 100-300 f4 for spy shots and kids sports all in all spend an extra 800-1000 for dual purpose sports, celeb spying, and motorsports kit. with reach up to 420mm @ 5.6. what do you think. My niche is Event/nightclub, Youth sports (Peewee - High school), motorsports, portrait, and celeb-paparazzi/redcarpet.