The online features (EPSON Connect & Google Print) are nice gimmicks, but can in different situations ever be beneficial (eg as a fax replacement if you send on the go via iPhone partner directly on the PDF printer want, instead of taking the detour via email-> Printers.)
The only thing I still would like to mention: the automatic opening and revealing the printer controller and the storage part (cf. video) does not work on XP-600! Unfortunately, you have everything here manually "superscript", if you want to print something. For me, the printer is therefore most fully "open" on the shelf, but this is not a major problem. I would have been happy only on the "luxury aspect".