I love the IIGS. The sound is by far amazing, if used properly. Out Of This World had its best version on the IIGS thanks to the cinematic music, missing in ALL other versions.
Thanks for this video, you brought back some memories, and reminded me I shouldn't have thrown to the bin that IIGS I won on eBay with a busted PSU :P
I also want to thank you because I had totally forgotten about Crystal Quest. I played that one extensively on my uncle's IIGS. Love the sound of the "exit" *ahem*