I don't know *much* about this, but if you get a camera that has the capability of making use of the HIGH-SPEED cards, they take the pictures much faster. I have a Fuji Finepix that can use the regular SD card or the HIGH-SPEED SD card and when I use the high-speed card, it is tons quicker. There is a website with a lot of information about comparing different kinds of cameras called Steve's Digicams. www.steves-digicams.com If you narrow your search down to two or three models, you can do comparisons and they have reviewes and can lead you to places where your camera can be ordered for the best price. I just checked a 10 megapixel Fuji Finepix is under $130, with 12x optical zoom and uses the high speed card. It does NOT have to have the high speed card and the high speed cards are more expensive, but they are also quicker.
My sister has an Olympus camera which is similar to my Fuji in size and capabilities and one of her features is the ability to shoot a bunch of pictures in a row, like a fashion model photographer. She takes pictures for her church and oftentimes she needs a pic of a special speaker or something and she wants it while he's speaking and also doesn't want to be obvious out shooting. She can do that without a flash and get 10-15 shots in a row and it's likely that ONE of them will turn out to work for their web site. My sister and I just went to Italy together last month and there were times she got better pictures than I because of this feature, but there were times I got better pictures than her because of the Fuji's capability to do super macro, which I really like.
Both of these camera's I'm talking about are larger types of cameras...sometimes called mid-size cameras. Definitely not those huge SLRs...but also definitely not those little bitty things that you can easily slip into a pocket or purse.
I would also recommend going to a store and feeling the camera and taking some trial shots with it before you make your final decision. I thought I wanted an Olympus like my sister until I actually held one at HH Gregg and for me, it just didn't feel right...I had a hard time focusing, it didn't seem natural. So, when you settle on a style you're really interested in, make sure you actually get to see and hold one of that STYLE... somewhere, but if you buy it online, it's MUCH cheaper.
Sometimes when you buy the camera you can get a good deal on a high speed card at that time.
Other pluses about the SD card-- they are readily available world-wide.
These cameras also use AA batteries which are readily available world-wide. (I bought a few sets of rechargable nickle metal hydride ones and they last can last easiliy through a day of sight-seeing and 300+ picture taking.)
My daughter and son-in-law bought a little Sony on their honeymoon and they LOVE it and get great pictures from it...and it's about the size of a credit card (I'm exaggerating, but not much) It's really probably about the size of my RAZR cell phone... it is LITTLE and it's easy to take with them and the whole back is the viewer.
Our other daughter has a digital SLR Nikon that is HUGE...but takes FANTASTIC pictures.
All these cameras have different features...you have to figure out what's most important to you.
Also, REMEMBER that the prices will come down and the features will get more advanced..it's the nature of technology. My Fuji cost about $200 almost 2 years ago...now a similar one is four models later and $70 cheaper.
Also remember that as much as you think you can plan to have a camera for your children growing up...your needs may change, the manufacturers may come out with something that you like better, it could get lost or broken... the important thing is to buy SOMETHING and start taking pictures!!! And don't forget to back them up on your computer--put them on CDs or on an external hard drive.
I sure hope this helps. Good luck.