When comparing digital media cards some cards have different write speeds, what should I look for a camera?

With inexpensive pont & shoots, the speed of the card won't matter much - the camera's output speed will be the bottleneck. You might notice a slight differnce with movies.
With high end gear, dSLR cameras in particular, the card certainly DOES make a difference. Rob Galbraith has run some benchmarks for Canon and Nikon models with different cards: http://www.robgalbraith.com/bins/multi_p...

what ever is compatible with your camera. read the part of your manual that should specify the correct card for it.

Depends on the photography you will be doing.

if u r not a professional , anyone will do.sd card r more common i think.

If you have a digital SLR then you should go with the fast write speed, if you have a point and shoot then that card is just too much for you're camera.

1.which one is compatible with your camera.
2.take the highest write speed. When you test it never perform as advertised ...allways will be much slower. at least 20% slower.

The first thing to make sure that the card fit with your camera. And as a second thing, you should check the writing or reading speeds. The higher, the better.