Nice SD card for me. I have a dozen or so, and this one is my new monster, enabling me to photograph an entire wedding in RAW mode, as well as JPG, and all the images are on one card. Fast enough to shoot lots of RAW and JPG images without ever hitting the buffer. If shooting sports in RAW, It might have hit the buffer, not sure.
I'm a full time professional photographer (trying to get out of the profession) who shoots in RAW mode.
Here's a description of RAW vs JPG, (a bonus add-on to the review.) It's free. Tips are okay. ;)
"RAW" is simply a format that includes pretty much all the data from the time you push the button. "JPG" (Jpeg) is a processed file format that is compressed as well. RAW files can be quite large, and enable the photographer the option of creating large photos, or making greater corrections after the image is created.
Let's say that I photograph a wedding and the indoor church lighting is "Incandescent". My camera is set to "incandescent" and I create wonderful ceremony images. As they kiss, and walk down the aisle, I turn on my flash, and forget to change my "white balance" to "Flash" for their exit. All those JPG images would be VERY blue. With JPG, I have little room to adjust the color back to an accurate color. Had I shot RAW, it would have been a piece of cake. Speaking of cake...
Think of JPG as being a baked cake. The camera processes each image you create based on the camera's settings. It processes for: white balance, sharpening, contrast, etc, and bakes it into the finished image. With RAW, if you have your camera set to "Daylight" and accidentally shoot under fluorescent lighting, or incandescent lighting, you can edit the file back to the correct color. Think of it (kinda) as making a cake, but being able to go back and tweak the recipe later (kinda-sorta).
Another general thought about SD cards- Be careful with them. The black plastic ribs on the reverse side can get damaged if not careful.
* I almost never shoot an image on "Auto-white balance" or "program". Not going into that, but suffice to say, I like to spend time shooting, not editing.