saralee wrote in post #5991474
I find the battery grip help me on the 40D in finding the DOF button. Before I got the grip I always had trouble locating the DOF button.
so its a $180 solution that helps you find your DOF button? 
i tried out the E2N at the store on my 40D, and its build quality was a bit shoddy compared to 40D body. at $150+, i'll pass. i wouldn't mind paying that much if it was more like the grip already on the 40D...made out of magnesium alloy and well molded (with the middle finger indent and simliar grip rubber). and where the @#$! is the AF on button? i, too, think that canon should have the bp-511's load from the side, that makes a lot more sense. however, one reason that i can come up with for its current design is so that you can insert one battery and run the camera off that. if you loaded one battery in the side, you would likely need a placeholder to keep that one battery from sloshing around inside your camera as you turned it. my personal opinion is that canon designed it to NOT fit the camera in terms of shape/design, so that people could distinguish between non-1D cameras with grips and 1D cameras with the built in grip. just another way canon drives people up the camera ladder. if canon built their batt grips like nikon, i would've bought one already.
my experience so far with batt grips is i bought a third party grip for my rebel XTi, and tried a Canon E2N (for my 40D) out at the store. to be completely honest, my Opteka XTi batt grip feels better than the Canon E2N, and only cost $100, which included two batteries. I would recommend the Opteka rebel batt grip, but I'm not familiar with the Opteka version of the BG-E2. the reason i got the rebel grip is that it helped keep my pinky onboard when the camera was horizontal. i don't have this trouble on the 40D, which has a really nice horizontal grip. additionally, since the BG-E2N is a lot larger than the rebel grip, i didn't feel as tempted to get one, since the 40D was already bulkier than my rebel. i tended to leave the rebel grip off anyway, unless i was doing portraits.
perhaps my attitude toward batt grips will chance once canon designs ones that look like they were made for the camera, and have the same functionality as the horizontal grip (AF-on button...), and makes them higher quality. i'd like to try to replace my neckstrap with a handstrap. i know there are handstraps that mount without the batt grip, but those weren't that appealing.