I much prefer my old Quicksilver and have never cared for the cheesegrater look with the G5. Recently however, it's rubbed off on me.
I own three G5s and what I really DO like is their raw power and the fact that certain things are built in. Things that I had to add on to my QS to get, such as USB 2.0, SATA and Bluetooth. Things that eventually just caused the Mac to have so many problems I no longer wanted to deal with it. Hence the G5s. But I get your preference.
Oh yeah. Not a fan of Tiger. Tiger and I have a turbulent history.