Suitable Pocket camera for Railfanning?

I'm looking for a reasonable priced pocket digital camera.  I want one with

a decent lense with a low aperture.

I'm interested in one with a good range of shutter speeds with less
spacing 
than say a film slr with 1/250 and the next increment being 1/500.  I
would 
also like to burn at least 5-8 fps to the flash card in one burst. 

Is there one out there with all the settings fully controllable by the 
user?

thanks
bill

-- 
---
William O'Hara
www.N1ey.com - Amateur Radio and Railfan Blog
www.yahoogroups.com/group/illinoiscentral - premier discussion list re: 
ICRR