Any of the current sub-$1000 DSLRS will serve you well. They all have adjustable shutter speeds from around 1/2000 sec to 20 or 30 seconds. All have a continuous drive mode at between 2.5-3 frames per second.

Here's a side by side technical comparison of 10 cheap DSLRS: http://www.dpreview.com/reviews/comp...ra100&show=all

I just decided to get a DSLR and I'm going with Canon for a few reasons. Its mainly a past use thing though, so go with whichever camera you like best. The Nikon D80 gets a lot of love, the Canon is supposed to have very good image quality, the Pentax 10d combines many features of its competition (image stabilizer in the body, dust reduction, etc.). Look at some reviews, do some research, and decide which camera fits you best. You can't go wrong with any of them.