I have the 5100 4mp Fuji and use the FinePixViewer which has a RAW to TIFF converter that was loaded when I intalled the viewer. 
I always transfer the files to the PC harddrive first and the FinePixViewer really works well for the 10MB tiff files, I can scan through pretty quickly.  It will slow a bit when the format of the file switches from RAF to TIF. 
The card reader transfer is much faster than directly moving the files from the camera, I think this is due to the PC computer(very fast) communicating with the Camera computer(not so fast) whereas the card reader gives the PC computer direct access to the flash memory.  

I am really happy with my camera and am continually surprised at the results.  Of course this may change over the next week when I try a few things with my sister-in-law's Canon.

Mike