I have about (10) 80-photo slide trays with Ektachromes and Kodachromes but haven't looked at them with my slide projector in about 15 years. I have recently scanned about two trays of the 10 and find that they show well on a 52" HDTV with music in the background, dissolves, titles, etc. Actually I think they look better than with a slide projector.
I use all kinds of projection methods, I am not totally luddite like that in showing work in that manner. Having said that, I recently had a Kodachrome editing party where my wife cooks something insanely good from the Food Network, and I show a tray of 80 professionally shot, modern Kodachrome slides, mostly through modern Leica glass, on a top-of-the-line Leica RTS projector on a brand new screen. Let me tell you, that not only looks a lot better than what my 47" HDTV could do, but better than when viewed on a light table with a Schneider loupe....seriously jaw dropping...
"I always put my fb prints in a filled aquarium on the wall.
No problem with dry down times..." APUG'r Willie Jan