Thanks, Jeri, now I know more about what he wants to do.

Some of his images are unsharp. Glare may be reduced by putting lens paper over the two (or three) electronic flashes yoked together. Depth of focus is important to get an overall clear image with rings and bracelets when photographed out of flat, even with a macro lens. I still have to use a long exposure at a small aperture to get the depth I need. Here is where digital seems to make things easier.

Digital seems to have advantages at first look. Longer exposures, with less light, require a stand or tripod (reversible if the latter). I use a stand and bellows so I can micro-focus easily, and adjust the flash distances (a better illusion of depth if they are unequal). I think it might be easier with digital, but I haven't set up for it yet, still using an optical system.
A cable release reduces shake, timer usually unnecessary.

Five mp (perhaps four) with macro is sufficient for the sharpness necessary in your images. Some other qualities, such as the optical lens, not just the digital magic, enters in here, but don't worry about make if you stick to the seven or so top brands- the features you want and ease and convenience of operation are more important.
And work with a good dealer to make sure you satisfy your needs!