Professional drum scanning gives the best results but is dear.
When I had a lot to do a couple of years back and had 'switched' to digital. I worked out it was much cheaper to buy a new scanner, scan all of my slides (around 600) and then sell the scanner on again on eBay. It's quite tedious, but fairly therapeutic to sit at the scanner with some music on while it scans 6 slides at a time.
I've recently started using film again and I scan it onto a flatbed with a photo adapter. The results really very good, the technology has come on miles in the last few years.