New powerbook G4: please tell me this is a good investment

hi all,

im thinking of getting one of the new powerbook G4s (15 inch, superdrive, etc…) and im planning on using it as my primary computer. ive got a PC now, but im sick of PCs so im making the switch. i was thinking of getting a tower G5 but i really like the idea of being able to bring my work with me where ever i go. i do a lot of design work so id like to get the 15 inch version (1280 x 854 screen res). is it possible to work mostly off a laptop? ive never owned one and only used my friend’s for checking email and what not. i figure i can get a flat panel monitor and hook it up via the DVI port on the powerbook…

comments / suggestions?