Hi Nesreen (and thanks for the setup Julie!)- first of all congrats on deciding to buy an edible printer.
Yes, so the MG5540 is actually the same printer as the MG5520, the last two digits basically represent the ‘region’ they are selling in (ie 20 is America, 50 is UK, 60 is Australia etc). We haven’t used this printer but the main difference between the two is around the rear feed, where you load the edible sheets – The 5300 has it, but the 5500 doesn’t, meaning you have to load in at the bottom. Feedback from others with a bottom feeding printer is that it’s fine, but you have to limit the number of sheets you load at a time, as it can jam occasionally. I’d ask the distributor about it (and hopefully you’ll get a balanced response!).
Plenty of other learnings around the inks and icing once you get to it, and happy to help. When you get to software – we have an interest in this one as a result of frustrating experiences with existing software (I’ll save that one for another time) but feel free have a try of the designer at http://topperoo.com when you are all setup with the icing, printer and inks!