Upload & Sell: Off
As with many pieces of technological pieces of equipment, and pro-printers are no different, there is a learning curve of sorts to figure out both how to maintain the equipment as well as operate the equipment to enjoy its full potential. Epson professional level printers are definitely in this field. You need to learn to play your instrument just as a musician masters a new musical instrument.
Those that expect to only simply "push a button" will either be sorely disappointed or never fully realize the true capabilities of their newly acquired professional fine art printer.
To be sure there are "lemons" in every product line, but I'm also convinced that the internet tends to amplify the squeeky wheel syndrome. I do not mean to minimize the difficulties or problems that people have had with clogging, head issues, etc. as their pain is very real. But I do know that the vast majority are extremely happy with their professional printers, and by default those that are happy don't go complaining loudly on the internet. I'm happy to be part of that group (knock on wood!) and have had zero issues with my 9800, 4800, and 9900 printers.
But to be sure, I've spent a lot of time learning about maintenance, environmental issues, custom profiles, fine art media characteristics, spraying, framing, etc. all in pursuit of making the best fine art print. After all, isn't that the next step after the photography?
Early on, I had to ask myself if I really wanted to "be a printer." And I knew it meant more than simply pushing a button. You need to really make the commitment to learn your instrument. Cost should not be an issue or "trying to save money" over a pro lab as the primary motivation.
Anyway, between Canon and Epson pro level printers, you really can't go "too wrong." It really comes down to your own workflow and preferences. My studio and printing business is firmly seated with Epson, from both a workflow, reliability, and quality perspective.
p.s www.harveyheadcleaner.com is the printer utility that can run scheduled test prints automatically in your absence, presumably to keep a small amount of ink moving through the heads and keep the capping station moist. No connection, but I use this utility and it works as advertised. I use hhc on a 9800 that I converted to K7 piezography.