I use a version of Snow Leopard compiled for PowerPC on my G5 1.8 GHz, I dual boot Tiger and Leopard on my 2GHz g5, use Leopard on PowerBook, and I dual boot 6 OSes on my Power Mac g4!
I currently have Tiger installed on a CF card but I am installing Leopard and Adelie Linux and Void Linux and Mac OS 9 Lives and Jaguar and I might do 1 more. I don't know what to do with all those operating systems but just thought it'd be a cool project.
It just depends on the machine I am using at the time.
My QS 2002: OS 9
My MDD 2002: Tiger
My G5 Dual: Sorbet Leopard
My Intel 5,1: High Sierra
My Late 2017 Mini: Big Sur
All my Intel Laptops: Lion or Sierra or High Sierra depending on the model.
It just depends on the machine I am using at the time.
My QS 2002: OS 9
My MDD 2002: Tiger
My G5 Dual: Sorbet Leopard
My Intel 5,1: High Sierra
My Late 2017 Mini: Big Sur
All my Intel Laptops: Lion or Sierra or High Sierra depending on the model.
Makes sense! OS 9 definitely runs better than Tiger on your QuickSilver, and your G5 dual is so speedy fast you might as well just upgrade to the best OS possible.