I've actually got into Macs recently. It all started when I got two PowerBook G3 Lombard's for $10 each! They have PPC G3 333MHz, one 384MB, 256MB on the other. Mac OS X on one and I installed Mac OS 9.2.2 on the other. X runs pretty good, but I am very partial to 9! I just like it. The 1024X768 screens on these are awesome! I liked the Macs so much I just bought a new PowerBook G4 15" 1.67GHz with Superdrive.
With the Wallstreet you can install both 9 and X. Get a nice 10GB+ HD and you are all set.