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Shoot with your camera. It's way faster and for many slides even better in quality. The idea that a scan is always better is just plain wrong. Indeed, most scans are better than a slide copy done in camera. But it's just slightly better in the details and then only when done perfectly well. In my experience a lot of lab scanned slides, and most of home scanned slides are just not up to my quality standards and worse than a good shot from your digital SLR on a slide copy stand. Making a good scan is really time consuming and costs a lot of experimentation.
I have done most of my slide scans with a 1Ds mk II on a Multiblitz slide copier, a dedicated optical stand for slides and negatives with a built in flash. It copies 35mm until medium format slides. This copy stand can do litteraly hundreds of slides in just a few hours once calibrated for the slide film used and your camera. I also have a Nikon Coolscan 8000 ED that I use to scan high quality medium format film slides and negatives. But it is really only in use for top quality scans where the details count. I have done maybe 10 scans this year with the Nikon Coolscan. I hate the workflow and the time it costs, so it's really only in use when the ultimate quality is necessary. To digitize slides with a DSLR on a slidecopier (with a good macro lens or even better an enlarger lens) is not hard at all and it's fast. If dynamic range is a problem I recommend to shoot in bracket mode and merge the files according to tone maps you want. This process is easy to automate and if done well is hardly below the quality of a great scan. No need to say that white balance, contrast compensation and all kinds of file treatment are much easier and faster to do. The main issue that'll remain are dust and small scratches. Most good scanners have lighting units and software that takes care of removing dust specs and scratches. If your slides are clear and clean this is a minor issue. and for those slides that suffer from it you should be able to repair the dust and scratches in postprocessing. A good multiblitz slide scanner can be bought second hand at prices between 100-150 euro including a repro lens or an enlarger lens like the EL-Nikkor, Schneider Componon, or a Rodenstock Rodagon.