Canon and Epson both make flatbed scanners that have the ability to scan negs or slides and are really affordable. We parted with our big $$$ Nikon scanners when we switched to new Mac’s with OSX and bought a $99 Epson. Nice thing is that you can also scan documents and other things with it so it’s not a loss after you scan all your slides.
Considering the Epson flatbed that we use on a daily basis has a higher resolution then the Nikon Coolscan that we used to scan with, I think the flatbed is just fine.