Hi there, since this question is from before Christmas....you probably have already decided which way to go. As most posts say it really depends on what you will end up doing. But for my work, I have a current i7 processor in a fairly powerful pc. I use tethering and a program to shoot between 60 and 90 shots of an item (macro work) in jpeg, download and stack together. All quite fast. Then if ok, I switch to raw and re shoot the images and repeat process....this time as raws the downloading and stacking together take quite awhile. So computer speed is important for my application.