Don' t bother getting a color laser printer. Image quality is nowhere near as impressive as on ink-jets. A color laser is okay for basic proofing, but for presentations to clients, you want glossy stock and stochastic dots, not halftone. Ink-jets are also glacially slow, so don't invest too much here. When you need a beautiful glossy proof, go to a service bureau and bill the client.
Digital video is the next revolution.
Apple is pointing much of its hardware in this direction, and as designers, we must adapt or run the risk of following typographers into oblivion. With that in mind, be aware that the FireWire input on your G4 isn't just for an external hard drive. It doesn't have a replaceable lens, nor the best low-light fidelity or sensitivity, but it produces sharp, clear digital video. Using iMovie2 and Cleaner 5, my tendency toward guerilla graphics is satisfied here. If you need higher quality, spring for the Canon XL1 with its interchangeable lenses and the ENG professional look.