Not problems, as such, just things you ought to know about before you spend €650.
Mostly it's things like you'll have to read some PDFs in landscape mode to be able to see the text. Things that will add a step or three. Mainly I want you to be aware of them so that they don't surprise you after you've made a purchase, and so that you can decide ahead of time if you are willing to deal with them or not.
But like I said, I'd rather let someone who actually has an iLiad comment on the details from direct experience, as I'd just be working from memory of what others have said on the matter, and I don't want to take the chance of giving you faulty information.