i have a 20" iMac G5 and haven't ever wanted for more screen space. However, as fteter noticed, the new 24" iMac has a better quality screen than the 20" (8-bit vs 6-bit, better viewing angle too.). I plan to upgrade next year (Nehalem ftw!) and hope that by then, the 24" drops down to the midrange model. If so i'll grab it in a heartbeat.