Slides for me is preatty much for ... slide projection. So yes we would scan it, but the primary purpose to project them.
I was lucky to have a leitz with colorplan and the images we see at home is priceless. Amazing colors, saturation.
I can project those in 5 meter distance without any detoration on image quality.
Amazing to see slide projection compared to any digital projection.
For C41, I am doing it at home.
I do not have JOBO automatic gadget, it is only about the kettle and a temperature meter more or less.
More damage I make with my shaky hand and fuzzy exposure settings than with the so called inconsistency of manual processing.
so ... go for it ... a 5 liter Tetenal c41 lasts a bit longer than a year for me having mixed a liter working solution at the time.
I have forgot lab processing pretty soon having a heartattack due to the damage they have done for my films that they contrary called as "development".
Only for E6 I am sending it to outfit that is doing manual processing of it and I am satisfied with the results. Also the amount of slides I do is incompatible with the self life of the working solution of the e6 devs.