Could a Jumbo MacBook Replace the iMac?
A big MacBook Pro could conceivably replace the iMac, but it would be massively more expensive, if today’s prices are any indication. If lack of a battery is what’s keeping you from buying an iMac, get a UPS (uninterruptible power supply, i.e., a smart battery); a 24-inch iMac plus a good UPS would still be less expensive than a 17-inch MBP. There’s also a good reason why almost all laptop makers have stopped including PC card slots and expansion bays: Hi-speed USB and/or Firewire.