To be honest, I favored the 4GB compact flash cards in the Sandisk Extreme series for their fast read/write speeds. Additionally, the 4GB capacities matched the 4GB DVD's that I was backing up my files to at that time. Kept my workflow simple. These cards have proven to be so reliable that I just haven't had any reason to purchase any of the higher capacity cards. However, when Sandisk decides to favor us with a 16 or 32GB compact flash card with 45mb per second read/write speeds, I'm sure I'll be one of the first persons in line, ready to hock one or more of my children, in order to own a couple of those cards.

I won't go with too high a capacity, but I prefer 8-16 GB cards. These are a real help when you're shooting a high number of photos.

It's tempting, but I'll stick with my handful of 2 & 4 gig cards thank you.

I still stick to a number of smaller cards. I have not yet been convinced to use the biggies. It's been a long time since I had a card go bad bit the what if question still looms.

After shooting a few hundred images, I take a few seconds and put in a new 2 gig card.

I have had cards fail, I usually was not successful in getting those pictures back after the card crashed.

I am leaving on a three week wilderness canoe trip. I have a DSLR and am taking three 4GB cards rather then one 8GB or one 16GB one bad card could nullify my trip!

I have used 4 GB cards without a problem. I have 3 of the Sandisk Extreme III. They are very fast and the size is great for me. They have been dependable so far. Unless I go on an extended trip I would not need any more than that for my photo needs.

Since I don't need to shoot RAW. The highest JPEG setting is fine. That being said. I would rather lose a few photos from one card, than ALL my photos from one card. This is why I use multiple cards. Canon 20D, SanDisk 2 GB Cards.

I find that 4 gig cards work well for me. I use 4 cards which is more then enough for a days shooting so I will never loss more then 250-300 images with one card failure.

I think the camera makers should have put two card slots in the dslr so you can save to both just in case. However, I have taken tens of thousands of images without ever having a card fail.

This somewhat depends on the way one shoots especially with high file mega sensors in raw. They require very large capacity cards to store only a couple hundred shots.

I have had a card to fail, so I am pretty gun-shy about trusting them.

I have been burned - so I use only 2 gig cards!

I will never put all my eggs in the same basket.

I think the memory card business is trying to justify its self by makeing larger cards for the cameras.

I have a Canon 1D Mark III and always capture images redundantly and write to both the CF and SD cards to minimize the risk.

I never use a card larger than 2gb. Not only do I worry about the possibility of lost cards, but stuffing that much data in the same physical space as a smaller capacity card could lead to data retrieval problems. I had an 8gb card fail this way, but I have never had a problem with a 2gb card. We used to change film after 36 exposures, is it really a big deal to change a card after 100 or 200 exposures?

Because DVD MAX Capacity is just over 4 gb. It is easier to split un-edited shots on 4 GB cards.

I have never seen a technology that does not fail once in a while. I would rather have several cards of lower capacity than one high capacity. Its called 'mean time between failures.'

We are taught the wisdom of having a backup for everything to minimize risk--camera, lenses, flash, batteries, etc. Short of owning a D3, a good way minimize loss of all photo shoot images from a single card failure is is to use several smaller cards.

Especially since I copy images from my cards to a CD or DVD directly after exposures I limit the number of exposures to less than a hundred and therefore don't ever meet the 500+ exposures possible on my cards.

If you need to take action shots at maximum burst rate such as at a sporting event and want to do so in RAW, the high capacity is very helpful.

Gremlins do appear now and then. I would hate to lose one picture so I use smaller cards. Easy to store and easy to change.

Experience has shown that I need to use cards according to the type of shoot. If there are natural breaks that would allow me to change cards without missing any shots I do so. Otherwise I use a larger card.

Actually, my largest memory cards are 4GB and I find that they are usually sufficient for me. I stick with the 4GB cards not because I don't trust larger cards, but because I find that a full 4GB card tests the limits of my patience when I am transferring the photos to my PC. I'm afraid that if I had larger memory cards, I'd go nuts waiting for the photos to transfer.

No matter what the arguments, peace of mind, dictates that I will never consider using one card on a shoot.

I like the smaller cards also so I can change when I am shooting differant scenes and areas.

Each shoot goes on one card. I've accumulated 70K images using three different CF cards. Not one single failure can be attributed to a CF card.

Having lost photos on a defective memory card which could not be retrieved, I'll continue to spread the risk.