the idea of using the tc-80n3 is so I dont have to babysit the camera, yes doing AEB can easly be done just using the cameras inbuilt functions and makes the use of any remote useless to a point. the wireless remote does trhe same as the camera, but from a distance of upto 100 feet (good for when camera on a lakeside, and im in the pub!
) the benefit of the timer remote is I can do a sunset bracket'd over say 40 mins without having to worry about spending 40 mins in front of the camera or remembering to use a remote. its for convieance mostly.
whilst the camera is set up on a pole, tripod etc, i can continue to take other photos of the surrounding area at the same time.
in my day, I only get 24 hours, and including work, thats reduced another 9, then sleep... so as much as I can do in one afternoon at one location is only benefiting myself.
as for storage space, thats not really an issue, i have a few 16gig and few 8gig cf cards (as im out most afternoons snapping, raw soon eats away (as you know) at storage, they are cheap enough anyways (and a lot lighter than a laptop for an afternoon walk))
What situation would you need a delay of more than 10sec?
For time lapse, say on a flower, sky over mountains etc.. imagination is the only limiting factor
For most of the time the card will run out sooner hence this is best achieved with a laptop connected & the canon remote capture software can do same too.
storage is not a factor (remembering to put it in is
) and the laptop is not always conveinant due to extra weight / bulk
long exposure not something I would use, just happens to be there
again can be used as the same as timer, sunset or sunrise, bracketed 60 mins 10 mins a bracket, makes for nice HDR timelapse or even a whole day http://www.hdrtimelapse.com/
the videos do look stunning