The memory issue can be handled by a SD or MMC card (that\'s what they are for after all).
Guest,
I agree with your other arguments, but this one isn\'t quite so simple. The 32 meg RAM limit on the 5600 isn\'t so easily overcome by memory cards. They will extend the storage space available for programs and data, but will not extends the amount of working RAM, unless you set up a swap partition (which is a bad idea unless you have a Microdrive, and even then it will hurt performance greatly). In this respect the 64 megs RAM on the 5500 is superior, (but only if you use a non-Sharp ROM, by default only 32 megs are available for working memory). The 16 meg flash limitation on that model that is most easily improved with the SD card.
Sadly, I find that having several Opera windows open can easily chew up the memory on the 5600, and I will often see the dialog that forces me to close some other applications.
However, due to the extra large large battery, I still think the 5600 is a better general purpose machine.